CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

SAN JOAQUIN RIVER - NEWMAN (NWMC1)

Latitude: 37.35º N	Longitude: 120.98º W	Elevation: 90 Feet
Location: Merced County in California		Bulletin Group: San Joaquin		River Group: San Joaquin

Issuance Time:

Apr 30 2025 at 7:37 AM PDT

Next Issuance:

May 01 2025 at 9:00 AM PDT

Action/Monitor: 63.0 Feet

Minor Flood: 69.4 Feet

Moderate Flood: 70.7 Feet

Major Flood: 71.7 Feet

Plot Type:

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.

Observed Data Credit
	Raw streamflow data is provided by the US Geological Survey (USGS). View US Geological Survey (USGS) Data for this station location.

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2024*	5,330	59.44	Mar 6, 2024
2023*	19,800	65.93	Mar 17, 2023
2022*	1,260	51.74	Dec 30, 2021
2021*	1,760	53.26	Feb 1, 2021
2020*	2,910	55.79	Oct 1, 2019
Historical High Stage/Flow Events (Period of Record - Apr 1912 to Present) - Ranked by Flow
1997*	36,200	66.14	Jan 28, 1997
1938*	33,000	--	Mar 07, 1938
1983*	30,700	65.78	Mar 04, 1983
1969*	28,000	65.90	Feb 26, 1969
2006*	24,600	66.26	Apr 09, 2006
* Discharge affected by regulation or diversion

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
71.7 Feet	Top of levee rb
70.4 Feet	Danger stage.
70.0 Feet	Flood water reaches the top of the levee that surrounds the Newman waste water treatment plant.
69.4 Feet	Project flood stage.
66.26 Feet	Peak stage of record. 4/9/2006
66.14 Feet	1/28/1997
65.0 Feet	The fisherman's bend trailer park north of hills ferry road begins to flood.
64.0 Feet	The Wastewater Treatment Plant begins taking on river water and flood pumping begins.
63.6 Feet	Sand slough will flow.
63.0 Feet	Monitor stage. Levee patrols required.
62.0 Feet	Water seepage begins outside the levee along the river, near the newman waste water treatment plant.
55.0 Feet	The city of Newman Wastewater Treatment Plant (WWTP) begins to flood at the lowest point. Newman Police Department shooting range a the WWTP is also affected.

Official 7 Day National Weather Service Forecast (CAZ302)

Today: Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 74 to 82. Northwest winds up to 10 mph.

Tonight: Mostly clear. Lows 54 to 60. West winds 5 to 15 mph.

Thursday: Sunny. Highs 74 to 82. West winds up to 10 mph shifting to the northwest in the afternoon.

Thursday Night: Mostly clear. Lows 53 to 59. West winds 5 to 15 mph.

Friday: Sunny. Highs 73 to 81. West winds 5 to 15 mph with gusts to around 30 mph.

Friday Night: Partly cloudy. Lows 50 to 56.

Saturday: Cooler. Partly sunny. Highs 58 to 66.

Saturday Night: Breezy, colder. Partly cloudy. Lows 43 to 49.

Sunday: Partly sunny. Highs 58 to 66.

Sunday Night through Monday Night: Partly cloudy. Lows 45 to 54. Highs 65 to 73.

Tuesday: Sunny. Highs 69 to 77.

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 San Joaquin Valley-Hanford 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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