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: Apr 21 2019 at 8:25 AM PDTNext Issuance: Apr 22 2019 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
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
2013*
1,860
42.19
Dec 25, 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 70 to 78. Northwest winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.

Tonight: Clear. Lows 48 to 56. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Monday: Sunny, warmer. Highs 77 to 85. Northwest winds up to 15 mph.

Monday Night: Clear. Lows 51 to 59. Northwest winds 10 to 15 mph shifting to the west after midnight.

Tuesday: Sunny. Highs 81 to 90. Light winds.

Tuesday Night: Mostly clear. Lows 55 to 63.

Wednesday: Sunny. Highs 84 to 93.

Wednesday Night and Thursday: Clear. Lows 57 to 65. Highs 83 to 93.

Thursday Night: Mostly clear. Lows 54 to 62.

Friday: Partly cloudy. Highs 75 to 85.

Friday Night and Saturday: Mostly clear. Lows 51 to 59. Highs 74 to 84.
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.