Search
Menu

Explore

Hazards

Analysis

Rankings

Reference

Sacramento River at Colusa Weir

Highest listed crest 70.60 ftFlood stage 70.1 ft47 crests since 1940

The Sacramento River at Colusa Weir crested above flood stage 1 time among the 47 crests the National Weather Service lists from 1940 to 2026. The highest, 70.60 ft on March 1, 1940, was minor flooding, 0.50 feet above flood stage. 2 other gauges on the Sacramento River crested above flood stage within a week of it, 2 at their own highest listed crest.

The gauge

Highest listed crest
70.60 ft
March 1, 1940
Flood stage
70.1 ft
Major flooding from 73.9 ft
Crests at major
0
1 above flood stage
Most recent flood crest
March 1, 1940
70.60 ft, minor flooding
Location
Colusa County
California
Identifiers
NWS CLAC1
No USGS station

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Sacramento River at Colusa Weir
Action stage60.946Feb 27, 2026The level at which the NWS or its partners begin to take action
Flood stage (minor)70.11Mar 1, 1940Minimal or no property damage, but possibly some public threat
Moderate flood stage72.90—Some inundation of structures and roads near the stream
Major flood stage73.90—Extensive inundation of structures and roads

Every listed crest

47 crests from 1940 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Sacramento River at Colusa Weir, 1940 to 2026 62646668707274ft Flood stage 70.1 ftMajor 73.9 ft Mar 1, 1940: 70.60 ft, minor floodingJan 27, 1941: 67.50 ft, action stageJan 24, 1943: 68.30 ft, action stageJan 14, 1953: 66.90 ft, action stageJan 17, 1956: 67.50 ft, action stageMay 21, 1957: 62.70 ft, action stage; 2,350 cubic feet per secondFeb 21, 1958: 68.80 ft, action stage; 83,600 cubic feet per secondFeb 26, 1958: 68.80 ft, action stage; 83,600 cubic feet per secondApr 4, 1958: 66.80 ft, action stage; 46,600 cubic feet per secondFeb 10, 1960: 66.50 ft, action stage; 41,800 cubic feet per secondJan 7, 1965: 68.50 ft, action stage; 77,400 cubic feet per secondFeb 1, 1967: 67.20 ft, action stage; 53,200 cubic feet per secondJan 23, 1969: 67.40 ft, action stage; 56,700 cubic feet per secondDec 5, 1970: 66.70 ft, action stage; 44,900 cubic feet per secondJan 20, 1973: 66.80 ft, action stage; 46,600 cubic feet per secondJan 18, 1974: 67.10 ft, action stage; 51,500 cubic feet per secondJan 17, 1978: 67.60 ft, action stage; 60,200 cubic feet per secondMar 4, 1983: 68.96 ft, action stage; 81,500 cubic feet per secondFeb 19, 1986: 67.80 ft, action stage; 59,000 cubic feet per secondMar 4, 1987: 64.20 ft, action stage; 16,200 cubic feet per secondJan 5, 1988: 64.60 ft, action stage; 20,200 cubic feet per secondMar 12, 1989: 64.60 ft, action stage; 20,200 cubic feet per secondJan 22, 1993: 66.90 ft, action stage; 46,900 cubic feet per secondJan 11, 1995: 67.98 ft, action stageMar 16, 1995: 67.19 ft, action stageJan 3, 1997: 68.85 ft, action stage; 71,000 cubic feet per secondJan 2, 2006: 68.04 ft, action stageJan 16, 2006: 66.71 ft, action stageFeb 5, 2006: 64.76 ft, action stageMar 1, 2006: 66.03 ft, action stageMar 7, 2006: 67.19 ft, action stageFeb 11, 2007: 64.74 ft, action stageJan 27, 2008: 65.38 ft, action stageFeb 18, 2009: 65.10 ft, action stageFeb 24, 2009: 62.74 ft, action stageMar 3, 2009: 64.41 ft, action stageJan 16, 2023: 66.60 ft, action stageMar 16, 2023: 66.48 ft, action stageJan 23, 2024: 63.16 ft, action stageFeb 6, 2024: 66.66 ft, action stageFeb 21, 2024: 67.27 ft, action stageMar 7, 2024: 63.28 ft, action stageNov 24, 2024: 66.57 ft, action stageDec 16, 2024: 65.76 ft, action stageJan 5, 2025: 63.42 ft, action stageFeb 6, 2025: 68.16 ft, action stageFeb 27, 2026: 67.01 ft, action stage Highest, 70.60 ft, Mar 1, 1940 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Sacramento River at Colusa Weir 1940s: 1 1 1950s: 0 1960s: 0 1970s: 0 1980s: 0 1990s: 0 2000s: 0 2010s: 0 2020s: 0 1940s1950s1960s1970s1980s1990s2000s2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.
  3. 20 crests measured on an earlier gauge datum are left out: 66.64 ft on Jan 27, 2010; 61.99 ft on Dec 23, 2010; 67.83 ft on Mar 22, 2011; 65.02 ft on Dec 30, 2011; 66.10 ft on Dec 3, 2012; 66.07 ft on Dec 25, 2012; and more.

Highest crests

Highest listed crests, Sacramento River at Colusa Weir
1Mar 1, 194070.60+0.50Minor—
2Mar 4, 198368.96−1.14Action81,500
3Jan 3, 199768.85−1.25Action71,000
4Feb 21, 195868.80−1.30Action83,600
5Feb 26, 195868.80−1.30Action83,600
6Jan 7, 196568.50−1.60Action77,400
7Jan 24, 194368.30−1.80Action—
8Feb 6, 202568.16−1.94Action—
9Jan 2, 200668.04−2.06Action—
10Jan 11, 199567.98−2.12Action—
11Feb 19, 198667.80−2.30Action59,000
12Jan 17, 197867.60−2.50Action60,200
13Jan 27, 194167.50−2.60Action—
14Jan 17, 195667.50−2.60Action—
15Jan 23, 196967.40−2.70Action56,700
16Feb 21, 202467.27−2.83Action—
17Feb 1, 196767.20−2.90Action53,200
18Mar 16, 199567.19−2.91Action—
19Mar 7, 200667.19−2.91Action—
20Jan 18, 197467.10−3.00Action51,500
21Feb 27, 202667.01−3.09Action—
22Jan 14, 195366.90−3.20Action—
23Jan 22, 199366.90−3.20Action46,900
24Apr 4, 195866.80−3.30Action46,600
25Jan 20, 197366.80−3.30Action46,600
26Jan 16, 200666.71−3.39Action—
27Dec 5, 197066.70−3.40Action44,900
28Feb 6, 202466.66−3.44Action—
29Jan 16, 202366.60−3.50Action—
30Nov 24, 202466.57−3.53Action—
31Feb 10, 196066.50−3.60Action41,800
32Mar 16, 202366.48−3.62Action—
33Mar 1, 200666.03−4.07Action—
34Dec 16, 202465.76−4.34Action—
35Jan 27, 200865.38−4.72Action—
36Feb 18, 200965.10−5.00Action—
37Feb 5, 200664.76−5.34Action—
38Feb 11, 200764.74−5.36Action—
39Jan 5, 198864.60−5.50Action20,200
40Mar 12, 198964.60−5.50Action20,200
41Mar 3, 200964.41−5.69Action—
42Mar 4, 198764.20−5.90Action16,200
43Jan 5, 202563.42−6.68Action—
44Mar 7, 202463.28−6.82Action—
45Jan 23, 202463.16−6.94Action—
46Feb 24, 200962.74−7.36Action—
47May 21, 195762.70−7.40Action2,350

The worst floods along the Sacramento River

For this gauge's highest crests, the other gauges on the Sacramento River that crested above flood stage within a week.

March 1, 1940: 70.60 ft here, minor flooding

  • Bend BridgeCA · Feb 28, 1940 · 38.90 ft · Major · its highest
  • Tisdale WeirCA · Mar 1, 1940 · 53.50 ft · Minor · its highest

Gauges on the Sacramento River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Sacramento River
Bend BridgeCA27.038.90 ft, Feb 28, 19406
Colusa Weir this gaugeCA70.170.60 ft, Mar 1, 19400
Hamilton CityCA147.0148.68 ft, Jan 15, 20230
Ord FerryCA114.0116.98 ft, Feb 19, 20170
Red Bluff Diversion DamCA255.5258.99 ft, Feb 5, 20250
Tehama BridgeCA209.5218.51 ft, Jan 21, 19931
Tisdale WeirCA51.653.50 ft, Mar 1, 19400
VeronaCA41.342.11 ft, Feb 20, 19860
Vina-Woodson BridgeCA183.0188.69 ft, Feb 5, 20250

Colusa County: every hazard · River floods across the country · California

NOAA National Water Prediction Service, gauge CLAC1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.