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
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.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
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
2014*
1,240
40.98
Apr 18, 2014
 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 cloudy. Highs 73 to 79. South winds up to 10 mph.

Tonight: Mostly cloudy. Lows 45 to 51. Light winds.

Saturday: Mostly cloudy in the morning then becoming partly cloudy. Highs 62 to 69. West winds up to 10 mph.

Saturday Night: Mostly cloudy. Colder. Lows 37 to 43. West winds 10 to 15 mph. Gusts up to 25 mph in the evening.

Sunday: Mostly cloudy. A slight chance of rain showers in the morning. Highs 54 to 62. Northwest winds 10 to 20 mph.

Sunday Night: Mostly clear. Lows 36 to 44.

Monday: Sunny. Highs 61 to 68.

Monday Night through Tuesday Night: Clear. Lows 38 to 48. Highs 66 to 74.

Wednesday through Thursday: Mostly clear. Highs 69 to 76. Lows 41 to 49.
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.