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: Mar 23 2017 at 2:36 PM PDTNext Issuance: Mar 24 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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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
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
2011*
9,250
53.95
Mar 26, 2011
 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 cloudy. A slight chance of rain after midnight. Lows 46 to 52. Northwest winds up to 10 mph shifting to the southeast after midnight.

Friday: A chance of rain in the morning, then rain in the afternoon. Highs 54 to 60. Southeast winds 10 to 15 mph. Gusts up to 25 mph increasing to 35 mph in the afternoon.

Friday Night: Cloudy. Rain in the evening, then a chance of rain showers after midnight. Lows 45 to 51. Southeast winds 10 to 15 mph. Gusts up to 30 mph in the evening.

Saturday: Mostly cloudy with a slight chance of rain showers. Warmer. Highs 58 to 68. Northwest winds up to 10 mph.

Saturday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows 43 to 49. Northwest winds up to 10 mph.

Sunday: Mostly cloudy with a chance of rain. Highs 54 to 62.

Sunday Night: Rain likely. Lows 46 to 52.

Monday: Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Highs 56 to 66.

Monday Night: Partly cloudy with a slight chance of rain showers. Lows 43 to 49.

Tuesday through Wednesday Night: Mostly clear. Highs 64 to 74. Lows 42 to 52.

Thursday: Partly cloudy with a slight chance of rain showers. Highs 61 to 71.
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.