CNRFC - Hydrology - River Guidance - Graphical RVF

TUOLUMNE RIVER - MODESTO (MDSC1)

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

Issuance Time:

Sep 29 2020 at 8:48 AM PDT

Next Issuance:

Sep 30 2020 at 9:00 AM PDT

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
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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ019)

Tonight: Mostly clear. Haze and patchy smoke. Lows 59 to 69. North winds up to 10 mph.

Wednesday: Mostly sunny. Patchy smoke in the morning. Haze through the day. Areas of smoke in the afternoon. Highs 92 to 98. Northwest winds up to 15 mph.

Wednesday Night: Mostly clear. Haze and areas of smoke. Lows 62 to 72. Northwest winds up to 15 mph.

Thursday: Mostly sunny. Haze and patchy smoke. Highs 91 to 97. Northwest winds up to 15 mph.

Thursday Night: Mostly clear. Haze and patchy smoke. Lows 62 to 72. Northwest winds up to 15 mph.

Friday: Mostly sunny. Haze and patchy smoke. Highs 91 to 97.

Friday Night: Mostly clear. Cooler. Lows 57 to 67.

Saturday through Sunday: Mostly clear. Highs 85 to 93. Lows 56 to 66.

Sunday Night: Partly cloudy. Lows 54 to 64.

Monday through Tuesday: Mostly clear. Highs 83 to 90. Lows 54 to 64.

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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Verification - Historical Graphical RVF
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