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: Sep 29 2020 at 8:48 AM PDTNext Issuance: Sep 30 2020 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
2019*
7,210
50.66
Mar 8, 2019
2018*
5,030
47.26
Apr 7, 2018
2017*
16,200
58.97
Feb 22, 2017
2016*
2,830
43.88
Mar 15, 2016
2015*
1,160
40.81
Apr 6, 2015
 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)
Tonight: Mostly clear. Haze and patchy smoke. Lows 59 to 69. North winds up to 10 mph.

Wednesday: Mostly sunny. Patchy smoke in the morning. Haze through the day. Areas of smoke in the afternoon. Highs 92 to 98. Northwest winds up to 15 mph.

Wednesday Night: Mostly clear. Haze and areas of smoke. Lows 62 to 72. Northwest winds up to 15 mph.

Thursday: Mostly sunny. Haze and patchy smoke. Highs 91 to 97. Northwest winds up to 15 mph.

Thursday Night: Mostly clear. Haze and patchy smoke. Lows 62 to 72. Northwest winds up to 15 mph.

Friday: Mostly sunny. Haze and patchy smoke. Highs 91 to 97.

Friday Night: Mostly clear. Cooler. Lows 57 to 67.

Saturday through Sunday: Mostly clear. Highs 85 to 93. Lows 56 to 66.

Sunday Night: Partly cloudy. Lows 54 to 64.

Monday through Tuesday: Mostly clear. Highs 83 to 90. Lows 54 to 64.
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.