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Hydrograph River at a Glance Download
Cosumnes River at McConnell Stage (ft)Flow (kcfs)Highest Forecast: 25.8 ft 2:00PM Oct 28, 2021Forecast: 25.7 ft 3:00PM Oct 28, 2021Forecast: 25.6 ft 4:00PM Oct 28, 2021Forecast: 25.5 ft 5:00PM Oct 28, 2021Forecast: 25.5 ft 6:00PM Oct 28, 2021Forecast: 25.4 ft 7:00PM Oct 28, 2021Forecast: 25.4 ft 8:00PM Oct 28, 2021Forecast: 25.3 ft 9:00PM Oct 28, 2021Forecast: 25.3 ft 10:00PM Oct 28, 2021Forecast: 25.2 ft 11:00PM Oct 28, 2021Forecast: 25.2 ft 12:00AM Oct 29, 2021Forecast: 25.2 ft 1:00AM Oct 29, 2021Forecast: 25.1 ft 2:00AM Oct 29, 2021Forecast: 25.1 ft 3:00AM Oct 29, 2021Forecast: 25.1 ft 4:00AM Oct 29, 2021Forecast: 25 ft 5:00AM Oct 29, 2021Forecast: 25 ft 6:00AM Oct 29, 2021Forecast: 25 ft 7:00AM Oct 29, 2021Forecast: 25 ft 8:00AM Oct 29, 2021Forecast: 24.9 ft 9:00AM Oct 29, 2021Forecast: 24.9 ft 10:00AM Oct 29, 2021Forecast: 24.9 ft 11:00AM Oct 29, 2021Forecast: 24.9 ft 12:00PM Oct 29, 2021Forecast: 24.9 ft 1:00PM Oct 29, 2021Forecast: 24.9 ft 2:00PM Oct 29, 2021Forecast: 24.9 ft 3:00PM Oct 29, 2021Forecast: 24.8 ft 4:00PM Oct 29, 2021Forecast: 24.8 ft 5:00PM Oct 29, 2021Forecast: 24.8 ft 6:00PM Oct 29, 2021Forecast: 24.8 ft 7:00PM Oct 29, 2021Forecast: 24.8 ft 8:00PM Oct 29, 2021Forecast: 24.8 ft 9:00PM Oct 29, 2021Forecast: 24.8 ft 10:00PM Oct 29, 2021Forecast: 24.7 ft 11:00PM Oct 29, 2021Forecast: 24.7 ft 12:00AM Oct 30, 2021Forecast: 24.7 ft 1:00AM Oct 30, 2021Forecast: 24.7 ft 2:00AM Oct 30, 2021Forecast: 24.7 ft 3:00AM Oct 30, 2021Forecast: 24.7 ft 4:00AM Oct 30, 2021Forecast: 24.7 ft 5:00AM Oct 30, 2021Forecast: 24.6 ft 6:00AM Oct 30, 2021Forecast: 24.6 ft 7:00AM Oct 30, 2021Forecast: 24.6 ft 8:00AM Oct 30, 2021Forecast: 24.6 ft 9:00AM Oct 30, 2021Forecast: 24.6 ft 10:00AM Oct 30, 2021Forecast: 24.6 ft 11:00AM Oct 30, 2021Forecast: 24.6 ft 12:00PM Oct 30, 2021Forecast: 24.5 ft 1:00PM Oct 30, 2021Forecast: 24.5 ft 2:00PM Oct 30, 2021Forecast: 24.5 ft 3:00PM Oct 30, 2021Forecast: 24.5 ft 4:00PM Oct 30, 2021Forecast: 24.5 ft 5:00PM Oct 30, 2021Forecast: 24.5 ft 6:00PM Oct 30, 2021Forecast: 24.5 ft 7:00PM Oct 30, 2021Forecast: 24.5 ft 8:00PM Oct 30, 2021Forecast: 24.5 ft 9:00PM Oct 30, 2021Forecast: 24.5 ft 10:00PM Oct 30, 2021Forecast: 24.4 ft 11:00PM Oct 30, 2021Forecast: 24.4 ft 12:00AM Oct 31, 2021Forecast: 24.4 ft 1:00AM Oct 31, 2021Forecast: 24.4 ft 2:00AM Oct 31, 2021Forecast: 24.4 ft 3:00AM Oct 31, 2021Forecast: 24.4 ft 4:00AM Oct 31, 2021Forecast: 24.4 ft 5:00AM Oct 31, 2021Forecast: 24.4 ft 6:00AM Oct 31, 2021Forecast: 24.4 ft 7:00AM Oct 31, 2021Forecast: 24.4 ft 8:00AM Oct 31, 2021Forecast: 24.4 ft 9:00AM Oct 31, 2021Forecast: 24.4 ft 10:00AM Oct 31, 2021Forecast: 24.4 ft 11:00AM Oct 31, 2021Forecast: 24.4 ft 12:00PM Oct 31, 2021Forecast: 24.4 ft 1:00PM Oct 31, 2021Forecast: 24.4 ft 2:00PM Oct 31, 2021Forecast: 24.4 ft 3:00PM Oct 31, 2021Forecast: 24.3 ft 4:00PM Oct 31, 2021Forecast: 24.3 ft 5:00PM Oct 31, 2021Forecast: 24.3 ft 6:00PM Oct 31, 2021Forecast: 24.3 ft 7:00PM Oct 31, 2021Forecast: 24.3 ft 8:00PM Oct 31, 2021Forecast: 24.3 ft 9:00PM Oct 31, 2021Forecast: 24.3 ft 10:00PM Oct 31, 2021Forecast: 24.3 ft 11:00PM Oct 31, 2021Forecast: 24.3 ft 12:00AM Nov 01, 2021Forecast: 24.3 ft 1:00AM Nov 01, 2021Forecast: 24.3 ft 2:00AM Nov 01, 2021Forecast: 24.3 ft 3:00AM Nov 01, 2021Forecast: 24.3 ft 4:00AM Nov 01, 2021Forecast: 24.3 ft 5:00AM Nov 01, 2021Forecast: 24.3 ft 6:00AM Nov 01, 2021Forecast: 24.3 ft 7:00AM Nov 01, 2021Forecast: 24.3 ft 8:00AM Nov 01, 2021Forecast: 24.3 ft 9:00AM Nov 01, 2021Forecast: 24.3 ft 10:00AM Nov 01, 2021Forecast: 24.3 ft 11:00AM Nov 01, 2021Forecast: 24.3 ft 12:00PM Nov 01, 2021Forecast: 24.3 ft 1:00PM Nov 01, 2021Forecast: 24.3 ft 2:00PM Nov 01, 2021Forecast: 24.3 ft 3:00PM Nov 01, 2021Forecast: 24.3 ft 4:00PM Nov 01, 2021Forecast: 24.3 ft 5:00PM Nov 01, 2021Forecast: 24.3 ft 6:00PM Nov 01, 2021Forecast: 24.3 ft 7:00PM Nov 01, 2021Forecast: 24.3 ft 8:00PM Nov 01, 2021Forecast: 24.3 ft 9:00PM Nov 01, 2021Forecast: 24.3 ft 10:00PM Nov 01, 2021Forecast: 24.3 ft 11:00PM Nov 01, 2021Forecast: 24.2 ft 12:00AM Nov 02, 2021Forecast: 24.2 ft 1:00AM Nov 02, 2021Forecast: 24.2 ft 2:00AM Nov 02, 2021Forecast: 24.2 ft 3:00AM Nov 02, 2021Forecast: 24.2 ft 4:00AM Nov 02, 2021Forecast: 24.3 ft 5:00AM Nov 02, 2021MCNC1(plotting HGIRG) Graph Created (1:08PM Oct 28, 2021)Forecast (issued 9:07AM Oct 28)Flood Stage is 46 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: This gage is out of service and currently unavailable.

NOTE: Forecasts for the Cosumnes River at McConnell are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Michigan Bar Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 55
Moderate Flood Stage: 54.9
Flood Stage: 46
Action Stage: 40
Low Stage (in feet): 0

Historic Crests
(1) 48.50 ft on 01/02/1997
(2) 47.10 ft on 02/18/1986
(3) 47.02 ft on 01/01/2006
(4) 46.56 ft on 02/04/1998
(5) 46.26 ft on 12/23/1955
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 42.04 ft on 02/15/2019
(2) 42.90 ft on 03/23/2018
(3) 43.84 ft on 02/10/2017
(4) 43.97 ft on 01/01/2017
(5) 40.19 ft on 03/14/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
40 Monitor Stage - Water exits the river upstream and downstream of Highway 99. Dillard Road is flooded from Highway 99 to Riley Road. Twin Cities Road is flooded from Hardesty Lane to Christensen Road.
39 The Cosumnes River overflow channel begins to flow.
About This Location Collapse

Latitude: 38.357500° N, Longitude: 121.343611° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 46 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 0 ft 46 ft  

Current/Historical Observations:
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
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