Please refer to the PIT Tag Specification Document, PTAGIS, PSMFC, for more information on the PIT Tag dataset.
DART Site Code Project/Site Name River KM Hydrounit Site Type Abbrev. PTAGIS Monitoring Site Codes ABC Abernathy Creek 87.005 17080003 trap ab AB1 AB2 AB3 Lower Abernathy Creek 87.001 17080003 trap ab AB3 BON Bonneville Dam 234 17080001 dam BON B1J B2A B2J BCC BO1 BO2 BO3 BO4 BVJ BVX BWL BCP Butcher Creek Acclimation Pond 754.089.013 17070011 acclimation BCP BCP BGM Burlingame Diversion 509.061 17070102 diversion BGM BGM BVC Beaver Creek Instream 843.057 17020008 instream BVC BVC BVP Beaver Creek Acclimation Pond 754.075.001 17020011 acclimation BVP BVP CAP Carlton Acclimation Pond 843.058 17020008 acclimation ca CAP CCP Cathrine Creek Acclimation Pond 522.271.232.048 17060104 acclimation cc CCP CFJ Clark Flat Acclimation Pond 539.270 17030001 acclimation cf CFJ CHL Lower Chiwawa River 754.077.001 17020011 instream chl CHL CHN Challis North 522.303.410 17060203 diversion ch CHN CHP Chiwawa Pond 754.077.002 17020011 acclimation ci CHP CHS Challis South 522.303.410 17060203 diversion ch CHS CHU Upper Chiwawa River 754.077.012 17020011 instream chu CHU CLE Cle Elum Dam Interim 539.299 17030001 dam CLE CLE CLJ Clearwater Juv Trap 522.224.010 17060306 trap cl CLJ CLP Coulter Creek Acclimation Pond 754.089.014.001 17020011 acclimation CLP CLP CR1 Chinook River, at Sea Resources 6.006 17080006 trap CR1 CR1 CR2 Chinook River at HWY 6.001 17080006 trap CR2 CR2 CR3 Chinook River at a culvert 6.002 17080006 trap CR3 CR3 DRP Dryden Pond 754.026 17020011 acclimation dp DRP EMC Eightmile Creek Instream 843.080.018 17020008 instream EMC EMC ENL Lower Entiat River 778.002 17020010 instream ENL ENL ENM Middle Entiat River 778.026 17020010 instream ENM ENM ESJ Easton Acclimation Pond 539.325 17030001 acclimation es ESJ ESS EFSF Sal R at Parks Creek 522.303.215.060 17060208 instream ESS ESS ESX Estuary Saltwater Trawl 73 17080006 trap ESX ESX FDC Feed Canal, Umatilla River 465.047 17010103 trap FDC FDC FDD Feed Diversion Dam 465.073 17070103 diversion FDD FDD GL2 SF Gold Creek Instream 843.035.002 17020008 instream GL2 GL2 GLC Gold Creek Instream 843.035 17020008 instream GLC GLC LGS Little Goose Dam 522.113 17060107 dam LGS GOJ GO2 LWG Lower Granite Dam 522.173 17060107 dam LWG GRA GRJ GRX GRP Grande Ronde Acclimation Pond 522.271.320 17060104 acclimation gd GRP HLD Hemlock Dam, Trout Creek, Wind River 251.017.002 17070105 dam HLA HLX IHA Ice Harbor Dam 522.016 17060110 dam IHR ICH IHA IMJ Imnaha Juv Trap 522.308.007 17060102 trap im IMJ JCJ Jack Creek 539.284.017.009 17030001 acclimation jc JCJ JDR John Day River KM 20 351.020 17070204 trap JD1 JD1 JDA John Day Dam 347 17070105 dam JDA JDJ JOB Jones Beach Mobile 73 17080006 - - JOB JUL Potlatch River near Julietta 522.224.024.014 17060306 instream JUL JUL KCB Kiwanis Camp Bridge 509.054 17070102 trap kb KCB KHS Big Bear Creek at KHS 522.224.024.023 17060306 trap KHS KHS KRS SF SALR @ Krassel Creek 522.303.215.065 17060208 trap KRS KRS LAP Lapwai Creek near the mouth 522.224.019.001 17060306 instream LAP LAP LBC Libby Creek Instream 843.042.001 17020008 instream LBC LBC LMN Lower Monumental Dam 522.067 17060110 dam LMN LMJ LM2 LMR Lower Methow River near Pateros 843.001 17020008 instream LMR LMR LOP Lostine River Acclimation Pond 522.271.131.042.021 17060105 acclimation LOP LOP LTR Lower Tucannon River 522.100.002 17060107 trap LTR LTR LWD Lowden Diversion Dam 509.051 17070102 diversion LWD LWD LWE Lower Wenatchee River 754.002 17020011 instream LWE LWE LWJ Lemhi Weir Juv 522.303.416.049 17060204 - - LWJ LWN Little Wenatchee River 754.090.008.004 17020011 instream LWN LWN MAD Mad River, Entiat River 778.017.001 17020010 instream MAD MAD MCD Mill Creek Diversion 509.054 17070102 diversion mcd MCD MCN McNary Dam 470 17070101 dam MCN MC1 MC2 MCJ MCX MRB Methow River Basin 843 17020008 trap MRB MRB MSC Methow River Side Channel 843.003 17020008 instream MSC MSC MWC Maxwell Canal, Umatilla River 465.024 17070103 trap MWC MWC MWE Middle Wenatchee River 754.050 17020011 instream MWE MWE NAL Lower Nason Creek 754.089.001 17020011 instream NAL NAL NAU Upper Nason Creek 754.089.019 17020011 instream NAU NAU NBA Nursery Bridge Dam 509.072 17070102 trap NBA NBA OMK Omak Creek Crump Weir 858.064 17020006 instream OMK OMK ORB Oasis Rd Bridge, Walla Walla River 509.015 17070102 trap ORB ORB PES Peshastin Creek 754.029.003 17020011 instream PES PES PRA Priest Rapids Dam 639 17020016 dam PRD PRA PRJ Prosser Dam 539.076 17030003 dam PRJ PRJ PRO PR2 RBF Round Butte Dam Fish 328.177 17070301 dam RBF RBF RCX Rattlesnake Creek 260 17070105 acclimation rc RCX RFL Redfish Lake Creek Trap 522.303.615.003 17060201 trap rf RFA RFB RFP Rolfing Acclimation Pond 754.089.021 17020011 acclimation RFP RFP RIA Rock Island Adult 730 17020010 dam RIA RIA ROZ Rosa Dam 539.206 17030001 dam ROZ ROZ RZF RPJ Rapid River Volitional Release 522.303.140.007.006 17060210 acclimation rp RPJ RRF Rocky Reach Dam 763 17020010 dam RRH RRF RRJ SAJ Salmon River Juv Trap 522.303.103 17060209 trap sa SAJ SCP Spring Creek Acclimation Pond 843.081 17020008 acclimation SCP SCP SFG SF Salmon River near Guard Station Rd. Bridge 522.303.215 17060208 instream SFG SFG SFL Shipherd Falls Ladder 251.002 17070105 instream SFL SFL SIP Similkameen Pond 941.121.008 17020007 acclimation si SIP SNJ Snake River Juv Trap 522.225 17060103 trap sn SNJ SSJ Sunnyside Dam 539.167 17030003 dam SSJ SSJ SUJ Sullivan Dam 163.043 17090102 dam su SUJ WFF SWT Sweetwater Creek near its mouth 522.224.019.010.001 17060306 instream SWT SWT TAY Big Creek @ Taylor Ranch 522.303.319.029.010 17060206 trap TAY TAY TMF Three Miles Falls Dam 465.005 17070103 dam TMJ TMA TMF TMJ TRB Tucannon Railroad Bridge 522.100.020 trap TRB TRB TRC Trout Creek Instream, Wind River 251.017.003 17070105 instream TRC TRC TUF Tumwater Dam Adult Fishway 754.044 17020011 dam TUF TUF TWR Lower Twisp River near MSRF Ponds 843.066 17020008 instream TWR TWR TWX Columbia River Estuary 50 17080006 trap TWX TWX UM1 NF Umatilla River at Forks Campground Bridge 465.165.001 17070103 instream UM1 UM1 UM2 Umatilla River above Imeques Acc. Pond 465.124 17070103 instream UM2 UM2 UWE Upper Wenatchee River 754.086 17020011 instream UWE UWE VC1 Valley Creek @ Stanley 522.303.609.002 17060201 trap vc VC1 VC2 Valley Creek blw Stanley 522.303.609.001 17060201 trap vc VC2 WAN Wanapum Dam 665 17020010 dam WAN WAJ WEA Wells Dam Adult 830 17020005 dam WEL WE1 WE2 WEA WFC Wolf Creek, Chewuck River 843.085.001 17020008 instream WFC WFC WPJ Wapato Juv 539.172 17030003 diversion WPJ WPJ WSH Warm Springs Acclimation Pond 328.135.016 17070306 acclimation WSH WSH WTL White River, Wenatchee 754.090.004 17020011 instream WTL WTL WW1 SF Walla Walla @ Harris Park Bridge 509.080.011 17070102 trap ww WW1 WW2 SF Walla Walla River at Bear Creek 509.080 17070102 trap ww WW2 Y1J Yakima River Trap 539.014 17030003 trap ya Y1J YHC Yellowhawk Creek 509.070 17070102 trap YHC YHC ZEN Secesh River near Zena Creek Ranch 522.303.215.059 17060208 instream ZEN ZEN Reach and observation site abbreviations are used in the output for the PIT Release and Observation Summary report and the Survival Estimates and the Mean Travel Time Estimates.
* Trap locations may change.
Brood Year: This field contains the last two digits of the calendar year when eggs were deposited or collected, if known.
Forklength (Lgth): The length from snout tip to the tail fork, recorded to the nearest millimeter.
Hatchery: When fish are tagged at a hatchery, this field contains the four-character abbreviation from the domain of hatchery codes.
Migration Year: A field in a Tagging File used to record the last two digits of the earliest calendar year when fish are expected to smolt and out-migrate to the ocean. In the case of adults and/or recaptured fish, this value will generally reference the current year.
Observation Date (Obs_DateTime): The date and time the fish are detected at the observation site.
Observation Site (Obs): The three character site code where the fish are observed.
PIT (Passive Integrated Transponder) Tag: A computer chip attached to a wire antenna and encapsulated in a biologically inert glass capsule. The tag is excited when it is passed through the electromagnetic field of a detector and the information on the computer chip is transmitted to the detector. See Research: PIT-Tagging and Other Research Tools, Pacific Salmon Coordination Office for a short description and illustration.
Release Date (RelDate): The date the fish was released to a stream to rear or out-migrate naturally.
Release River KM: The release location expressed in river kilometers from the mouth of the Columbia River. This is a hierarchical coding scheme from the mouth of the Columbia River to the release site (up to 7th order streams for point release sites) with each tributary delimited with a period. For example, the Release River KM for Lower Granite Dam of 522.173 reflects a distance of 522 km from the mouth of the Columbia River to the mouth of the Snake River, and 173 km from the mouth of the Snake River to Lower Granite Dam.
Release Site (RelSite): The six character site code where the fish are released.
Intra-Dam Release Site Codes: These codes are appended as a suffix to the three-character dam site code and provide a specific location for release at, above, or below hydroelectric facilities. For example, a release into the gatewells at Lower Granite Dam would be coded as LGRGWL. Use of Intra-Dam Release Site Codes will be required after 12/31/99.
CODE LOCATION BPS Release into the PIT-Tag Diversion System between the Diversion Gate and the furthest downstream PIT-Tag Detector BYP Release into the Facility Bypass Flume/Pipe COL Release into the Collection Channel upstream of the Dewatering Facility DTG Release into the Collection Flume/Pipe between the Dewatering Facility and the Collection/Bypass Gate DWT Release into the Dewatering Facility FBY Release into the Forebay within 0.5 km upstream of Dam GAT Release into Flume between Separator Exit and the Primary PIT-Tag Diversion Gate GWL Release into Gatewell(s) ICE Release into the Ice/Trash Sluiceway MRT Mortality Recovery OFL Release into the PIT-Tag Diversion System downstream of the Last PIT-Tag Detector ORI Release into Orifice(s) RBR Release below the PIT-Tag Diversion System Gate with subsequent Barge Transportation from the Facility RRR Release below the PIT-Tag Diversion System Gate with subsequent Return to the River at the Facility RTR Release below the PIT-Tag Diversion System Gate with subsequent Truck Transportation from the Facility RXR Release below the PIT-Tag Diversion System Gate with subsequent Transportation from the Facility SEP Release into the Flume downstream of the Collection/Bypass Gate or into the Separator SPF Release into the Forebay within 0.5 km upstream of Spillway SPL Release directly into Spill Bay(s) SPT Release into the Tailrace within 0.5 km downstream of Spillway SRR Release into the Separator Return Flume/Pipe with Direct Return to the River STS Release onto the Submerged Traveling Screen TAL Release into the Tailrace within 0.5 km downstream of Dam TRB Release into Turbine(s) Release Water Temperature: A field containing the water temperature (ºC) in the stream that fish are released into to rear naturally or migrate downstream.
Sequence Number (Seq): A field in a Tagging File detail record containing a sequential number, from 1 to 9999, that individually identifies each Tag Detail record within a Tagging File.
Species, Run, Rear Type (SpRRT): The three character code represents the species, run (the season the adult fish return from saltwater) and rearing type, respectively. If the fish is reared in an environment where both wild and hatchery fish existed then it is unknown unless the fish is clipped.
PIT Tag "Standard" Species, Run, and Rearing Type codes (as determined by PSMFC)
11H Hat. Spring Chinook 11U Spring Chinook (unknown r/t) 11W Wild Spring Chinook 12H Hat. Summer Chinook 12U Summer Chinook (unknown r/t) 12W Wild Summer Chinook 13H Hat. Fall Chinook 13U Fall Chinook (unknown r/t) 13W Wild Fall Chinook 15H Hat. Chinook (unknown run) 15U Chinook (unknown run & r/t) 15W Wild Chinook (unknown run) 25H Hat. Coho 25U Coho (unknown r/t) 25W Wild Coho 32H Hat. Summer Steelhead 32U Summer Steelhead (unknown r/t) 32W Wild Summer Steelhead 35H Hat. Steelhead (unknown run) 35U Steelhead (unknown run & r/t) 35W Wild Steelhead (unknown run) 3RH Hat. Rainbow Trout 3RU Rainbow Trout (unknown r/t) 3RW Wild Rainbow Trout 42H Hat. Summer Sockeye 42U Summer Sockeye (unknown r/t) 42W Wild Summer Sockeye 45H Hat. Sockeye (unknown run) 45U Sockeye (unknown run & r/t) 45W Wild Sockeye (unknown run) Tag Coordinator: The Coordinator ID code is the initials (two or three) of the project leader responsible for the PIT Tag data (not necessarily the person conducting the tagging or creating the Tagging File).
Tag Count: The total number of fish tagged during that particular release; it can range from single digits to thousands of fish.
Tag ID (Tag_ID): A unique 10- or 14-character hexadecimal code recorded on the computer chip in the PIT tag.
Tag Site: This field contains a code (between three and six characters) denoting the site where the fish were marked (see Tag and Release Site Codes). During a recapture event, this code designates the recapture site.
Tagging File (Tag_File): A file containing information from a PIT tagging session during which PIT tags are implanted in fish. A data file containing information pertaining to the original marking, release, recapture, or mortality of PIT-tagged fish.
Tagging Temperature: The temperature (ºC) of the tagging bath during the marking operation.
Travel (Days): The difference between the release date and the observation date. Note, this may include time spent in rearing and is therefore not a good estimate of actual migration time.
USGS Hydrologic Unit: An eight-digit code representing the primary through quaternary classifications of geographic mapping in the United States. The US Geological Service assigns code designations to watersheds; this eight-digit code defines the location of the release site. This information can be useful in GIS (Geographical Information Systems) applications. See USGS Hydrologic Units Maps for more information.
Weight: A field in a Tagging File used to report the weight of the fish, recorded in tenths of grams.
Survival Estimates: The survival estimates are calculated for a population of PIT-tagged fish as defined by the query.
The Survival Estimates tool uses Cormack-Jolly-Seber (CJS) estimates. The query results provide estimates and standard errors for the survival and detection probabilities, and the product of the final survival and detection probabilities. The standard error of all estimates are reported in parentheses. The estimate of the overall survival probability, i.e., the product of all the survival estimates, is reported as well.
For the CJS estimates to be valid, the following assumptions must be met:
- Individuals marked for the study are a representative sample from the population of interest.
- Survival and capture probabilities are not affected by tagging or detection. That is, tagged fish have the same probabilities as untagged fish.
- All detections are "instantaneous." That is, detection takes a negligible amount of time or distance relative to the length of the reaches between detection events.
- The fate of each tagged individual is independent of the fate of all others.
- All tagged individuals alive at the beginning of a reach have the same probability of surviving until the end of that reach.
- All tagged individuals alive at the beginning of a detection site have the same probability of being detected at that site.
- Each individual detected at a particular detection site has the same probability of being removed, and the probability of removal is independent of the survival process.
There are several limitations to the Survival Estimates produced by this tool.
- Depending on the selection criteria, the survival estimates will tend to over-pool releases.
- If you do not define the PIT Tag group specifically by a release site, then different release sites (and travel distances) will be included in the group; hence the assumption that all individuals have the same probability of survival may be violated for the first reach (release point to the first dam). Survival estimates for the other reaches (dam to dam) will be fine.
- If the PIT Tag group includes fish released from the same location but at different times, then the estimates will be a weighted average over time as a function of release size. If the probability of survival varies over time, the assumption that all individuals have the same probability of survival may be violated.
- The Survival Estimates tool is unable to produce estimates for the last dam because detection efficiency cannot be distinguished from survival for the final reach.
- Survival estimates are generated from capture histories for each fish that are based on data downloaded from the PTAGIS database system. The particular data used for these estimates contain only last detections and therefore do not take into account the full detection history for a fish at a given site and may not account for errors in detection sequence recording. This may lead to minor over censoring of the data that in turn may lead to slightly higher standard errors in parameter estimates when compared to systems that use the full detections history of the fish.
Mean Travel Time Estimates: The mean travel times are calculated for a population of PIT-tagged fish as defined by the query.
The travel time estimates are based on the release date for each pit-tagged fish as recorded in the PTAGIS database (and uploaded to the Columbia River DART database) and the first and last detection times at each downstream detection site. Travel Time estimates for release to downstream detection site are calculated using the release time and the time of the first detection at the downstream detection site. Between detection sites travel time estimates are calculated using the time of the last detection at the upstream site and the time of the first detection at the downstream site.
Arithmetic Mean Travel Time(reach travel time ) / number of unique fish detected at the detection sites
Harmonic Mean Travel Timenumber of unique fish detected at the detection sites / (When dealing with travel times, we are primarily interested in the speed with which fish travel from point A to point B. A good statistic for describing a particular group's speed is the harmonic mean. A harmonic mean is used when working with rates of speed, usually the number of days to travel a set distance. A benefit to using the harmonic mean is that it is more robust in the presence of outliers (i.e., a very fast or slow fish).
ESU (Evolutionarily Significant Unit) is the distinct populations listed for protection under the Endangered Species Act (ESA). DPS (Distinct Population Segment) is the distinct steelhead population listed for protection under the Endangered Species Act (ESA). See ESA Listing Pages, Protected Resources, NMFS, NOAA, for detailed information on ESA listings and ESU/DPS status and descriptions of specific stocks.
Chinook
The Snake River Spring/Summer Chinook ESU includes all naturally spawned populations of spring/summer-run Chinook salmon in the mainstem Snake River and the Tucannon River, Grande Ronde River, Imnaha River, and Salmon River subbasins, as well as fifteen artificial propagation programs: the Tucannon River conventional Hatchery, Tucannon River Captive Broodstock Program, Lostine River, Catherine Creek, Lookingglass Hatchery, Upper Grande Ronde, Imnaha River, Big Sheep Creek, McCall Hatchery, Johnson Creek Artificial Propagation Enhancement, Lemhi River Captive Rearing Experiment, Pahsimeroi Hatchery, East Fork Captive Rearing Experiment, West Fork Yankee Fork Captive Rearing Experiment, and the Sawtooth Hatchery spring/summer-run Chinook hatchery programs. Definition implemented by Columbia River DART: March 2010.
- Listed April 1992; threatened status reaffirmed on June 28, 2005. Northwest Regional Office, NMFS, NOAA
The Snake River Spring/Summer Chinook ESU Wild Only Subpopulation includes all naturally spawned populations of spring/summer-run Chinook salmon in the mainstem Snake River and the Tucannon River, Grande Ronde River, Imnaha River, and Salmon River subbasins. The ESU Wild Only Subpopulation does not include the 15 artificial propagation programs that are part of the Snake River Spring/Summer Chinook ESU. Definition implemented by Columbia River DART: March 2010.
The Upper Columbia River Spring Chinook ESU includes all naturally spawned populations of spring Chinook salmon in all river reaches accessible to spring Chinook salmon in Columbia River tributaries upstream of Rock Island Dam and downstream of Chief Joseph Dam in Washington, as well as six artificial propagation programs: the Twisp River, Chewuch River, Methow Composite, Winthrop NFH, Chiwawa River, and White River spring-run Chinook hatchery programs.
- Listed March 1999; endangered status reaffirmed on June 28, 2005. Northwest Regional Office, NMFS, NOAA
The Upper Columbia River Spring Chinook ESU Wild Only Subpopulation includes all naturally spawned populations of spring Chinook salmon in all river reaches accessible to spring Chinook salmon in Columbia River tributaries upstream of Rock Island Dam and downstream of Chief Joseph Dam in Washington. The ESU Wild Only Subpopulation does not include the six artificial propagation programs that are part of the Upper Columbia River Spring Chinook ESU.
The Lower Columbia River Chinook ESU includes all naturally spawned populations of Chinook salmon from the Columbia River and its tributaries from its mouth at the Pacific Ocean upstream to a transitional point between Washington and Oregon east of the Hood River and the White Salmon River, and includes the Willamette River to Willamette Falls, Oregon, exclusive of spring-run Chinook salmon in the Clackamas River, as well as seventeen artificial propagation programs: the Sea Resources Tule Chinook Program, Big Creek Tule Chinook Program, Astoria High School (STEP) Tule Chinook Program, Warrenton High School (STEP) Tule Chinook Program, Elochoman River Tule Chinook Program, Cowlitz Tule Chinook Program, North Fork Toutle Tule Chinook Program, Kalama Tule Chinook Program, Washougal River Tule Chinook Program, Spring Creek NFH Tule Chinook Program, Cowlitz spring Chinook Program in the Upper Cowlitz River and the Cispus River, Friends of the Cowlitz spring Chinook Program, Kalama River spring Chinook Program, Lewis River spring Chinook Program, Fish First spring Chinook Program, and the Sandy River Hatchery (ODFW stock #11) Chinook hatchery programs. Definition implemented by Columbia River DART: March 2010.
- Listed March 1999; threatened status reaffirmed on June 28, 2005. Northwest Regional Office, NMFS, NOAA
The Lower Columbia River Chinook ESU Wild Only Subpopulation includes all naturally spawned populations of Chinook salmon from the Columbia River and its tributaries from its mouth at the Pacific Ocean upstream to a transitional point between Washington and Oregon east of the Hood River and the White Salmon River, and includes the Willamette River to Willamette Falls, Oregon, exclusive of spring-run Chinook salmon in the Clackamas River. The ESU Wild Only Subpopulation does not include the 17 artificial propagation programs that are part of the Lower Columbia River Chinook ESU. Definition implemented by Columbia River DART: March 2010.
The Upper Willamette River Chinook ESU includes all naturally spawned populations of spring-run Chinook salmon in the Clackamas River and in the Willamette River, and its tributaries, above Willamette Falls, Oregon, as well as seven artificial propagation programs: the McKenzie River Hatchery (Oregon Department of Fish and Wildlife (ODFW) stock #24), Marion Forks/North Fork Santiam River (ODFW stock #21), South Santiam Hatchery (ODFW stock #23) in the South Fork Santiam River, South Santiam Hatchery in the Calapooia River, South Santiam Hatchery in the Mollala River, Willamette Hatchery (ODFW stock #22), and Clackamas hatchery (ODFW stock #19) spring-run Chinook hatchery programs. Definition implemented by Columbia River DART: March 2010.
- Listed March 1999; threatened status reaffirmed on June 28, 2005. Northwest Regional Office, NMFS, NOAA
The Upper Willamette River Chinook ESU Wild Only Subpopulation includes all naturally spawned populations of spring-run Chinook salmon in the Clackamas River and in the Willamette River, and its tributaries, above Willamette Falls, Oregon. The ESU Wild Only Subpopulation does not include the 7 artificial propagation programs that are part of the Upper Willamette River Chinook ESU. Definition implemented by Columbia River DART: March 2010.
The Snake River Fall Chinook ESU includes all naturally spawned populations of fall-run Chinook salmon in the mainstem Snake River below Hells Canyon Dam, and in the Tucannon River, Grande Ronde River, Imnaha River, Salmon River, and Clearwater River, as well as four artificial propagation programs: the Lyons Ferry Hatchery, Fall Chinook Acclimation Ponds Program, Nez Perce Tribal Hatchery, and Oxbow Hatchery fall-run Chinook hatchery programs. Definition implemented by Columbia River DART: June 2007.
- Listed April 1992; threatened status reaffirmed on June 28, 2005. Northwest Regional Office, NMFS, NOAA
- Definition used by Columbia River DART through May 2007. Snake River Fall Chinook ESU consists of the production from spawning populations of fall chinook in the Snake, Tucannon, Clearwater, Salmon, Imnaha and Grande Ronde Rivers.
The Snake River Fall Chinook ESU Wild Only Subpopulation includes all naturally spawned populations of fall-run Chinook salmon in the mainstem Snake River below Hells Canyon Dam, and in the Tucannon River, Grande Ronde River, Imnaha River, Salmon River, and Clearwater River. The ESU Wild Only Subpopulation does not include the 4 artificial propagation programs that are part of the Snake River Fall Chinook ESU.
Sockeye
The Snake River Sockeye ESU includes all anadromous and residual sockeye salmon from the Snake River Basin, Idaho, as well as artificially propagated sockeye salmon from the Redfish Lake captive propagation program. Definition implemented by Columbia River DART: March 2010.
- Listed November 1991; endangered status reaffirmed on June 28, 2005. Northwest Regional Office, NMFS, NOAA
The Snake River Sockeye ESU Wild Only Subpopulation includes all wild anadromous and residual sockeye salmon from the Snake River Basin, Idaho. Definition implemented by Columbia River DART: March 2010.
Steelhead
The Snake River Steelhead DPS includes all naturally spawned anadromous O. mykiss (steelhead) populations below natural and manmade impassable barriers in streams in the Snake River Basin of southeast Washington, northeast Oregon, and Idaho, as well six artificial propagation programs: the Tucannon River, Dworshak NFH, Lolo Creek, North Fork Clearwater, East Fork Salmon River, and the Little Sheep Creek/Imnaha River Hatchery steelhead hatchery programs. Definition implemented by Columbia River DART: March 2010.
- Listed August 1997; threatened status reaffirmed on January 5, 2006. Northwest Regional Office, NMFS, NOAA
The Snake River Steelhead DPS Wild Only Subpopulation includes all naturally spawned anadromous O. mykiss (steelhead) populations below natural and manmade impassable barriers in streams in the Snake River Basin of southeast Washington, northeast Oregon, and Idaho. The ESU Wild Only Subpopulation does not include the 6 artificial propagation programs that are part of the Snake River Steelhead DPS. Definition implemented by Columbia River DART: March 2010.
The Upper Columbia River Steelhead DPS includes all naturally spawned anadromous O. mykiss (steelhead) populations below natural and man-made impassable barriers in streams in the Columbia River Basin upstream from the Yakima River, Washington, to the U.S.-Canada border, as well six artificial propagation programs: the Wenatchee River, Wells Hatchery (in the Methow and Okanogan Rivers), Winthrop NFH, Omak Creek, and the Ringold steelhead hatchery programs. Definition implemented by Columbia River DART: March 2010.
- Listed August 1997; status upgraded to threatened on Jan. 5, 2006; reinstated to endangered status per U.S. District Court decision in June 2007; status upgraded to threatened per U.S. District Court order in June 2009. Northwest Regional Office, NMFS, NOAA
The Upper Columbia River Steelhead DPS Wild Only Subpopulation includes all naturally spawned anadromous O. mykiss (steelhead) populations below natural and man-made impassable barriers in streams in the Columbia River Basin upstream from the Yakima River, Washington, to the U.S.-Canada border. The DPS Wild Only Subpopulation does not include the 6 artificial propagation programs that are part of the Upper Columbia River Steelhead DPS. Definition implemented by Columbia River DART: March 2010.
The Middle Columbia River Steelhead DPS includes all naturally spawned anadromous O. mykiss (steelhead) populations below natural and manmade impassable barriers in streams from above the Wind River, Washington, and the Hood River, Oregon (exclusive), upstream to, and including, the Yakima River, Washington, excluding O. mykiss from the Snake River Basin, as well seven artificial propagation programs: the Touchet River Endemic, Yakima River Kelt Reconditioning Program (in Satus Creek, Toppenish Creek, Naches River, and Upper Yakima River), Umatilla River, and the Deschutes River steelhead hatchery programs. Definition implemented by Columbia River DART: March 2010.
- Listed March 1999; threatened status reaffirmed on January 5, 2006. Northwest Regional Office, NMFS, NOAA
The Middle Columbia River Steelhead DPS Wild Only Subpopulation includes all naturally spawned anadromous O. mykiss (steelhead) populations below natural and manmade impassable barriers in streams from above the Wind River, Washington, and the Hood River, Oregon (exclusive), upstream to, and including, the Yakima River, Washington, excluding O. mykiss from the Snake River Basin. The DPS Wild Only Subpopulation does not include the 7 artificial propagation programs that are part of the Middle Columbia River Steelhead DPS. Definition implemented by Columbia River DART: March 2010.
The Lower Columbia River Steelhead DPS includes all naturally spawned anadromous O. mykiss (steelhead) populations below natural and manmade impassable barriers in streams and tributaries to the Columbia River between the Cowlitz and Wind Rivers, Washington (inclusive), and the Willamette and Hood Rivers, Oregon (inclusive), as well as ten artificial propagation programs: the Cowlitz Trout Hatchery (in the Cispus, Upper Cowlitz, Lower Cowlitz, and Tilton Rivers), Kalama River Wild (winter- and summer-run), Clackamas Hatchery, Sandy Hatchery, and Hood River (winter- and summer-run) steelhead hatchery programs. Excluded are O. mykiss populations in the upper Willamette River Basin above Willamette Falls, Oregon, and from the Little and Big White Salmon Rivers, Washington. Definition implemented by Columbia River DART: March 2010.
- Listed March 1998; threatened status reaffirmed on January 5, 2006. Northwest Regional Office, NMFS, NOAA
The Lower Columbia River Steelhead DPS Wild Only Subpopulation includes all naturally spawned anadromous O. mykiss (steelhead) populations below natural and manmade impassable barriers in streams and tributaries to the Columbia River between the Cowlitz and Wind Rivers, Washington (inclusive), and the Willamette and Hood Rivers, Oregon (inclusive). Excluded are O. mykiss populations in the upper Willamette River Basin above Willamette Falls, Oregon, and from the Little and Big White Salmon Rivers, Washington. The DPS Wild Only Subpopulation does not include the 10 artificial propagation programs that are part of the Lower Columbia River Steelhead DPS. Definition implemented by Columbia River DART: March 2010.
Note on Migration Year 2000:
There was an release of unmarked subyearling chinook upstream of Snake River Trap which occurred in May 2000. As the result, there was some problem in proper identification of juvenile chinook at the trap (SNKTRP) beginning with May 22, 2000. Some subyearling fall chinook were tagged as 15Ws (Chinook, Unknown, Wild) and included in the wild yearling spring/summer chinook ESU totals via detections from the SNKTRP. Detections at SNKTRP after May 22, 2000 of wild yearling spring/summer chinook have been excluded from the "Chinook, Wild Spring/Summer Yearling" category.
Barometric Pressure: Barometric Pressure is atmospheric pressure at the site, given in mm Hg. It represents an average of hourly measures. Barometric Pressure is measured at Water Quality Monitoring stations in the forebay and tailrace of most projects (see Data Sites Map) and other key locations in the basin. Prior to 1995, the data are from a variety of sources within the U.S. Army Corps of Engineers.
Dissolved Gas: Dissolved gas is a measure of the pressure of dissolved gas in the water column. When spillway water plunges into the tailrace nitrogen is forced into the water at higher than normal levels. This condition, called supersaturation, occurs when dissolved gas pressure in the water actually exceeds the atmospheric pressure. The dissolved gas value represents a daily average of hourly meeasures within the range of 600-900 mmHg and is derived from U.S. Army Corps of Engineers gas monitoring efforts. Often collected at irregular intervals, this parameter may be missing values for one or more days, or reported values may be obviously incorrect. Dissolved Gas is measured at Water Quality Monitoring stations in the forebay and tailrace of most projects (see Data Sites Map) and other key locations in the basin. Prior to 1995, the data are from a variety of sources within the U.S. Army Corps of Engineers.
Dissolved Gas Percent: Gas percent reflects the degree of total dissolved gas supersaturation in the river at the given location. Gas percent is the daily mean of hourly observations. When gas pressure is exactly the same as the atmospheric pressure, the water is considered to be 100% saturated. If the gas pressure value is higher than atmospheric pressure, gas percent values rise above 100%. Daily averages are calculated from hourly values within the range of 90% to 200%. Gas percent data is often found to be quite noisy due to rapid fluctuations in spill volumes and atmospheric pressures. Dissolved Gas Percent is measured at Water Quality Monitoring stations in the forebay and tailrace of most projects (see Data Sites Map) and other key locations in the basin. Prior to 1995, the data are from a variety of sources within the U.S. Army Corps of Engineers.
Elevation: Elevation is given in feet above mean sea level and is a daily average of hourly measures. At most sites this will change less than a fraction of a foot over normal operations. Elevation is measured in the forebay of a project.
Elevation 10 Year Average: Daily average of elevation for a selected 10 year range. For each month and day, the data is summed for the selected 10 years and divided by the number of non-null data points available during that 10 year span.
Inflow: Inflow measurements represent the 24-hour average of hourly measures, reported by the U.S. Army Corps of Engineers. Inflow is given in kcfs, thousands of cubic feet per second.
Outflow: Outflow measurements represent the 24-hour average of hourly measures, reported by the U.S. Army Corps of Engineers. Outflow is given in kcfs, thousands of cubic feet per second. This represents the total outflow at any project, including spill and fish ladder flow.
Outflow 10 Year Average: Daily average of outflow for a selected 10 year range. For each month and day, the data is summed for the selected 10 years and divided by the number of non-null data points available during that 10 year span.
Spill: Spill also is given as a daily average of 24 hourly measures taken by the U.S. Army Corps of Engineers. It is also given in kcfs.
Spill 10 Year Average: Daily average of spill for a selected 10 year range. For each month and day, the data is summed for the selected 10 years and divided by the number of non-null data points available during that 10 year span.
Spill Percent: Spill Percent is calculated by DART from the daily averaged value for Spill divided by the daily averaged value for Outflow at a project.
Temperature (Scroll Case): Temperature (Scroll Case) is water temperature in degrees Celsius. This data is measured at the scroll case (part of the powerhouse) at a project. If provided values are in Fahrenheit, they are converted to Celsius. Temperature records are typically not collected outside the salmon migration season, so they are not usually 365 days long. Values above 0 C and below 35 C are averaged for a daily value.
Temperature (Scroll Case) 10 Year Average: Daily average of scroll case temperature for a selected 10 year range. For each month and day, the data is summed for the selected 10 years and divided by the number of non-null data points available during that 10 year span.
Temperature (WQM): Temperature (WQM) is water temperature in degrees Celsius. This data is measured at Water Quality Monitoring stations in the forebay and tailrace of most projects (see Data Sites Map) and other key locations in the basin. Temperature records are typically not collected outside the salmon migration season, so they are not usually 365 days long. Daily averages are calculated from hourly values above 0 C and below 35 C. Temperature at water quality monitoring stations was not collected prior to 1995.
Temperature (WQM) 10 Year Average: Daily average of water quality monitor temperature for a selected 10 year range. For each month and day, the data is summed for the selected 10 years and divided by the number of non-null data points available during that 10 year span.
Turbidity: Turbidity measures the water clarity, and by inference, the amount of particulate matter present. Turbidity is measured in the forebay or in the fish ladders of a project. Turbidity is reported in feet and measured with a Secchi Disk. In general, the Secchi disk is a 20 cm circular black and white plate. The Secchi disk is attached to a calibrated line and lowered into the water to the depth at which it disappears. The disk is then lifted until it reappears. The arithmetic mean of the two depths is considered the Secchi disk transparency or limit of visibility.
The 10 Year Averages are calculated by DART for each calendar day of data at each project. For the current year and any given project/month/day, the data from the previous 10 years on that calendar day is summed and divided by the number of non-null data points available. Calendar day averaging was chosen because, historically, data observations begin on a specific calendar day. Calendar day averaging gives different results than day of year averaging.