SacPAS: Central Valley Prediction & Assessment of Salmon

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Alert: Sacramento River Weirs Overtopping


Data Courtesy of CDEC; Forecast Data Courtesy of NWS Forecast Office Sacramento

Weir Analysis: Last 10 Days || View Other Years || WY 2020 Graph & Data Table || Overtop History Graphs || Subscribe || download CSV

Below Crest Crest Flood Danger
Peak Value in Period
Within 1 ft of Flood
Peak Value & Within 1 ft of Flood

River Stage (Feet) Above / Below Weir Crest Level, Today & Last 10 Days (12/01/2019 - 12/10/2019)
with Daily Average of NWS Forecasts issued 12-11-2019

Weir NWS Forecast
12/15
NWS Forecast
12/14
NWS Forecast
12/13
NWS Forecast
12/12
Today PeakToday Hour 12/10 12/09 12/08 12/07 12/06 12/05 12/04 12/03 12/02 12/01
MLW < -0.50 < -0.50 < -0.50 < -0.50     < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50
CLW < -0.50 < -0.50 < -0.50 < -0.50     < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50
TIS < -0.50 < -0.50 < -0.50 < -0.50     < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50 < -0.50
FRE -12.04 -12.60 -14.06 -13.75 -11.84 0000
-11.41
-12.72 -14.62 -14.80 -14.43 -13.93 -13.81 -15.02 -17.10 -18.27
Weir Moulton Weir (MLW) Colusa Weir (CLW) Tisdale Weir (TIS) Fremont Weir (FRE)
River Stage Levels
Minimum: 75.7
Crest: 76.2
Flood: 83.8
Danger: 84.8
Datum: NAVD88
Minimum: 60.4
Crest: 60.9
Flood: 70.1
Danger: 71.1
Datum: NAVD88
Minimum: 43.6
Crest: 44.1
Flood: 51.6
Danger: 52.6
Datum: NAVD88
Minimum: NA
Crest: 32.0
Flood: 39.5
Danger: 40.5
Datum: NAVD88
Summary for
12/01/2019 - 12/10/2019
Peak: Below Minimum
Crest: 0 Days
Flood: 0 Days
Danger: 0 Days
Peak: Below Minimum
Crest: 0 Days
Flood: 0 Days
Danger: 0 Days
Peak: Below Minimum
Crest: 0 Days
Flood: 0 Days
Danger: 0 Days
Peak: 20.59 on 2019-12-10
Crest: 0 Days
Flood: 0 Days
Danger: 0 Days
Site History
Last Date
Over Crest: 2019-03-13
Over Flood:
Over Danger:
Over Crest: 2019-04-18
Over Flood: 1999-04-22
Over Danger:
Over Crest: 2019-04-23
Over Flood: 2000-04-15
Over Danger: 1999-05-24
Over Crest: 2019-04-20
Over Flood: 1997-01-04
Over Danger: 1984-08-21
National Weather Service, Advanced Hydrologic
Prediction Service

NWS Multi-Day Forecast

NWS Multi-Day Forecast

NWS Multi-Day Forecast

NWS Multi-Day Forecast

Data Notes:

  1. At Tisdale, Moulton, and Colusa weirs, there is a minimum stage height to collect data. In the absence of data, the value is assumed below the stated minimum for the weir.
  2. Data is River Stage reported in Feet. Daily value is 24 hour average.
  3. Data Source: California Data Exchange Center
  4. Fremont Weir: On October 3, 2016, the California Department of Water Resources (DWR) changed the reporting of river stage data collected at 5 locations in the lower Sacramento River area from their previous datum, either National Geodetic Vertical Datum 1929 (NGVD29) or United Stated Engineering Datum (USED) to the North American Vertical Datum 1988 (NAVD88) standard.
  5. Moulton, Colusa, Tisdale weirs: On October 1, 2019, the California Department of Water Resources (DWR) changed the reporting of river stage data collected at 21 locations in the upper Sacramento River and Feather River area from their previous datum, either National Geodetic Vertical Datum 1929 (NGVD29), United States Engineering Datum (USED), or Local Datum to the North American Vertical Datum 1988 (NAVD88) standard.

View Analysis for:

Water Year 2020 Daily Average River Stage

graph WY 2020 weir

download CSV  

WY 2020 Moulton Weir
MLW
Minimum: 75.7
Crest: 76.2
Datum: NAVD88
Colusa Weir
CLW
Minimum: 60.4
Crest: 60.9
Datum: NAVD88
Tisdale Weir
TIS
Minimum: 43.6
Crest: 44.1
Datum: NAVD88
Fremont Weir
FRE
Minimum: NA
Crest: 32.0
Datum: NAVD88
Daily AvgFt above CrestFt above/
below
Flood
Daily AvgFt above CrestFt above/
below
Flood
Daily AvgFt above CrestFt above/
below
Flood
Daily AvgFt above CrestFt above/
below
Flood
NWS Forecast 2019-12-15 76.10     60.80     44.00     19.96    
NWS Forecast 2019-12-14 76.10     60.80     44.00     19.40    
NWS Forecast 2019-12-13 76.10     60.80     44.00     17.94    
NWS Forecast 2019-12-12 76.10     60.80     44.00     18.25    
2019-12-10                   20.59    
2019-12-09                   19.28    
2019-12-08                   17.38    
2019-12-07                   17.20    
2019-12-06                   17.57    
2019-12-05                   18.07    
2019-12-04                   18.19    
2019-12-03                   16.98    
2019-12-02                   14.90    
2019-12-01                   13.73    
2019-11-30                   13.38    
2019-11-29                   13.21    
2019-11-28                   12.89    
2019-11-27                   12.68    
2019-11-26                   12.50    
2019-11-25                   12.46    
2019-11-24                   12.40    
2019-11-23                   12.43    
2019-11-22                   12.46    
2019-11-21                   12.49    
2019-11-20                   12.52    
2019-11-19                   12.45    
2019-11-18                   12.30    
2019-11-17                   12.21    
2019-11-16                   12.24    
2019-11-15                   12.17    
2019-11-14                   12.11    
2019-11-13                   12.11    
2019-11-12                   11.96    
2019-11-11                   11.74    
2019-11-10                   11.77    
2019-11-09                   11.76    
2019-11-08                   11.72    
2019-11-07                   12.24    
2019-11-06                   12.61    
2019-11-05                   12.56    
2019-11-04                   12.84    
2019-11-03                   13.29    
2019-11-02                   13.90    
2019-11-01                   13.60    
2019-10-31                   13.68    
2019-10-30                   14.21    
2019-10-29                   14.37    
2019-10-28                   13.94    
2019-10-27                   13.86    
2019-10-26                   14.10    
2019-10-25                   14.12    
2019-10-24                   13.87    
2019-10-23                   14.16    
2019-10-22                   14.65    
2019-10-21                   14.66    
2019-10-20                   14.14    
2019-10-19                   14.14    
2019-10-18                   14.54    
2019-10-17                   14.50    
2019-10-16                   14.03    
2019-10-15                   13.95    
2019-10-14                   14.13    
2019-10-13                   14.31    
2019-10-12                   14.55    
2019-10-11                   14.86    
2019-10-10                   15.19    
2019-10-09                   12.68    
2019-10-08                   11.46    
2019-10-07                   13.20    
2019-10-06                   16.28    
2019-10-05                   16.58    
2019-10-04                   16.99    
2019-10-03                   17.10    
2019-10-02                   17.02    
2019-10-01                   16.97    
WY 2020
Total Days: 71
Daily AvgFt above CrestFt above/
below
Flood
Daily AvgFt above CrestFt above/
below
Flood
Daily AvgFt above CrestFt above/
below
Flood
Daily AvgFt above CrestFt above/
below
Flood
MLW
Crest Days: 0 (0.00 %)
Flood Days: 0
Danger Days: 0
CLW
Crest Days: 0 (0.00 %)
Flood Days: 0
Danger Days: 0
TIS
Crest Days: 0 (0.00 %)
Flood Days: 0
Danger Days: 0
FRE
Crest Days: 0 (0.00 %)
Flood Days: 0
Danger Days: 0

Overtop History at Weirs

Subscribe to Alerts

To subscribe to the SacPAS Weir Alert email, please email web@cbr.washington.edu with the subject "SacPAS Weir Alert Subscription". At this time, subscribing and unsubscribing to the alert is a manual process.

Emails are generated once daily at 7:00 am on days where the daily average river stage value for "yesterday" is greater than the crest level at least 1 of the 4 weirs being monitored.

Sample email content for 20 January 2017:

ALERT
Moulton (MLW) 1 days ago (01/19/2017) crested minimum 76.8: + 0.12 ft.

Colusa (CLW) 1 days ago (01/19/2017) crested minimum 61.8: + 4.14 ft.

Tisdale (TIS) 1 days ago (01/19/2017) crested minimum 45.5: + 3.01 ft.

Fremont (FRE) 1 days ago (01/19/2017) crested minimum 32.0: + 2.01 ft.

WY 2017 (111 Days) Summary
Moulton (MLW) Crest Days: 9 (8.11 %) Flood Days: 0 Danger Days: 0
Colusa (CLW) Crest Days: 16 (14.41 %) Flood Days: 0 Danger Days: 0
Tisdale (TIS) Crest Days: 24 (21.62 %) Flood Days: 0 Danger Days: 0
Fremont (FRE) Crest Days: 15 (13.51 %) Flood Days: 0 Danger Days: 0

To see full analysis, please refer to "Alert: Sacramento River Weirs Overtopping" on SacPAS website. 
URL: http://www.cbr.washington.edu/sacramento//data/alert_weirs.html

Thank you,
SacPAS Web Team
===============
This is automatic email generated by analysis at 20 Jan 2017 06:59:03 PST
Replies to this email go unanswered.
Please send questions about this service to Susannah Iltis, siltis@uw.edu

Citation
Columbia Basin Research, University of Washington. (2019). SacPAS Sacramento River Weir Overtopping. Available from http://www.cbr.washington.edu/sacramento/data/alert_weirs.html
Generated: 11 Dec 2019 20:25:16 PST. www.cbr.washington.edu/sacramento/data/.

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POC: web@cbr.washington.edu

SacPAS: Central Valley Prediction & Assessment of Salmon, University of Washington, Columbia Basin Research, www.cbr.washington.edu/sacramento/