National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service
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TUOLUMNE RIVER - MODESTO (MDSC1)
Latitude: 37.63º NLongitude: 120.99º WElevation: 90 Feet
Location: Stanislaus County in CaliforniaRiver Group: San Joaquin
Issuance Time: Aug 21 2017 at 7:33 AM PDTNext Issuance: Aug 22 2017 at 9:00 AM PDT
Monitor Stage: 50.5 FeetFlood Stage: 55.0 Feet
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.
Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2016*
2,830
43.88
Mar 15, 2016
2015*
1,160
40.81
Apr 6, 2015
2014*
1,240
40.98
Apr 18, 2014
2013*
1,860
42.19
Dec 25, 2012
2012*
1,980
42.41
May 13, 2012
 Historical High Stage/Flow Events (Period of Record - February 1895 to Present)**
1951*
57,000
69.19
Dec 9, 1950
1997*
55,800
71.21***
Jan 4, 1997
1956*
37,600
66.43
Dec 25, 1955
1969*
32,600
65.42
Jan 27, 1969
 * Discharge affected to unknown degree by regulation or diversion
 ** Most recent continuous record back to 1943 with segmented periods back to Feb 1895
 *** Backwater effect caused by debris on railroad trestle 1500 ft downstream of gage
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Mostly sunny. Highs 86 to 92. Northwest winds up to 10 mph.

Tonight: Partly cloudy. Lows 60 to 68. Northwest winds 10 to 15 mph.

Tuesday: Mostly sunny. Highs 86 to 94. Northwest winds up to 10 mph.

Tuesday Night: Mostly clear. Lows 60 to 68. Northwest winds up to 15 mph.

Wednesday: Mostly sunny. Highs 89 to 95. Northwest winds up to 10 mph.

Wednesday Night: Clear. Lows 60 to 68.

Thursday: Sunny. Highs 88 to 96.

Thursday Night through Sunday: Clear. Lows 58 to 68. Highs 88 to 98.
Impacts - E19 Information
55.0 FeetThis is channel capacity through downtown Modesto.
67.0 FeetExtensive flooding occurs. Flows in excess of 40,000 cfs could cause extensive damage to residential, industrial, and commercial development in Modesto downstream of gage.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Sacramento Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.