CNRFC - Hydrology - Observed River/Reservoir Conditions

TUOLUMNE RIVER - MODESTO (MDSC1)

Latitude: 37.63º N	Longitude: 120.99º W	Elevation: 90 Feet
Location: Stanislaus County in California		River Group: San Joaquin

Monitor Stage: 50.5 Feet

Flood Stage: 55.0 Feet

Observed Data Credit
	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
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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ019)

Tonight: Clear. Lows 57 to 67. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Wednesday: Sunny. Highs 91 to 99. Northwest winds around 10 mph.

Wednesday Night: Clear. Lows 59 to 69. Northwest winds 10 to 15 mph.

Thursday: Sunny. Highs 92 to 100. Northwest winds around 10 mph with gusts to around 20 mph.

Thursday Night: Clear. Lows 59 to 69. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Friday: Sunny. Highs 94 to 101.

Friday Night: Clear. Lows 61 to 71.

Saturday through Tuesday: Clear. Highs 93 to 103. Lows 63 to 73.

Impacts - E19 Information
55.0 Feet	This is channel capacity through downtown Modesto.
67.0 Feet	Extensive 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.

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