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: May 30 2020 at 8:57 AM PDTNext Issuance: May 31 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. Lows 52 to 58. Northwest winds around 10 mph.

Sunday: Partly cloudy in the morning then becoming mostly cloudy. Highs 76 to 84. West winds up to 10 mph.

Sunday Night: Mostly cloudy. Lows 56 to 62. Northwest winds up to 10 mph.

Monday: Mostly cloudy. Highs 79 to 87. Northwest winds up to 10 mph.

Monday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows 57 to 65. Northwest winds up to 10 mph.

Tuesday: Mostly sunny. Warmer. Highs 87 to 94.

Tuesday Night: Mostly clear. Lows 60 to 68.

Wednesday and Wednesday Night: Mostly clear. Highs 91 to 97. Lows 60 to 68.

Thursday: Sunny. Highs 88 to 96.

Thursday Night through Friday Night: Mostly clear. Lows 52 to 62. Highs 82 to 92.

Saturday: Mostly sunny. Highs 74 to 83.
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.