DART Smolt Index Graphics & Text

Data Courtesy of Fish Passage Center

Smolt Index Queries

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Select Year, Location, Species, River Data

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River Data are not available for all Smolt Index locations.

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Query Notes

  1. River Environment Variables are not available at all locations.
  2. To generate the Data Link for querying results directly from scripts and automated processes: make all selections, check "Generate Query Result Link Only" next to the Submit button, and click Submit.

Inflow, Outflow, Spill, and Temperature (Scroll Case) data are collected at the project (dam). Spill Percent is calculated by DART from the Outflow and Spill values. Temperature (WQM), Barometric Pressure, Dissolved Gas and Dissolved Gas Percent are measured at Water Quality Monitoring stations in the forebay and tailrace of most projects and other key locations in the basin (prior to 1995, these data are from a variety of sources within the U.S. Army Corps of Engineers). Turbidity is measured in the forebay or in the fish ladders at a project. Elevation is measured in the forebay of a project.

Bonneville Dam, 18 July 2006: The USACE initially reported incorrect hourly Bonneville spillway discharge for 2002-2004. DART is reporting the USACE's Recalibrated Spillway Discharge at Bonneville for this period. The Water Quality reports for BON, CWMW, CCIW, and WRNO include the recalibrated spill at Bonneville.

Wells Dam, 13 August 2012: The DCPUD has requested the water temperature data reported as the "Wells Scrollcase Water Tempurature" obtained for DART from prepared USACE text files be removed as erroneous. The Wells project does not report scrollcase water temperatures. This data has been removed from the publicly accessible DART dataset.

June 5 - July 9, 2013: DART reported partial averages for outflow and spill from several Upper Columbia PUD projects. These values have been corrected to show the average of the complete day. We would like to thank the CCPUD for helping us correct this issue.

Notes on the DART Smolt Index Dataset

Data Disclaimer: These data are preliminary and have been derived from various sources. For verification and/or origin of these data, contact the operators of the Fish Passage Center.

Combined lamprey juveniles is a combination of pacific lamprey ammocoetes, brook lamprey ammocoetes, unknown lamprey ammocoetes, pacific lamprey macropthalmia, and unidentified lamprey species. Caution should be used with interpreting lamprey juvenile collection counts at Lower Granite because of the possibility that lamprey may escape the sample tank before being sampled.

Rear Types: DART does not contain individual rear type counts for Smolt Index, only combined counts. Please refer to Fish Passage Center for individual rear type counts.

McNary Dam: Since 2003, operations at McNary Dam result in sampling every other day during the spring, approximately April 1 through June 30.

Little Goose (LGS) and Lower Monumental (LMN) dams: Since 2006, samples taken between April 1st and the beginning of juvenile fish transportation (usually in early to mid-May) at LGS and LMN represent incomplete smolt monitoring data. Only limited sampling to determine fish condition is conducted during this period. LMN samples every 3-4 days for a few hours. LGS samples for one 24-hour period, generally every 3-5 days.

Lower Monumental (LMN), John Day (JDA) and Rock Island (RIS) dams: No sampling in 2022.

See FPC Smolt Monitoring Program (SMP) Metadata for details about the Smolt Monitoring program and data. See the FPC Smolt Rearing Dispositions section for details about which individual Rear Type catoregories are possible by Species, Year, and Data Collection Site.