CNRFC - Hydrology - Observed River/Reservoir Conditions

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

Action/Monitor: 63.0 Feet

Minor Flood: 69.4 Feet

Moderate Flood: 70.7 Feet

Major Flood: 71.7 Feet

Plot Type:

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 Mean Daily Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025*	4,630	58.49	Mar 21, 2025
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
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	18.50	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
1980*	23,500	65.26	Feb 25, 1980
* 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: Rain in the morning, then rain likely early in the afternoon. Slight chance of rain late in the afternoon. Highs in the upper 50s. Southeast winds 5 to 15 mph. Chance of rain near 100 percent.

Tonight: Slight chance of rain in the evening, then rain after midnight. Lows in the lower 50s. Southeast winds 5 to 15 mph with gusts to around 30 mph. Chance of rain 90 percent.

Monday: Rain in the morning, then rain showers in the afternoon. Highs in the upper 50s. Southeast winds 5 to 15 mph. Chance of precipitation 90 percent.

Monday Night: Mostly cloudy. A 40 percent chance of rain in the evening. Lows in the mid 40s. Southeast winds up to 5 mph shifting to the north after midnight.

Tuesday: Partly sunny. Highs in the upper 50s. Northwest winds up to 5 mph.

Tuesday Night and Wednesday: Partly cloudy. Lows in the lower 40s. Highs in the upper 50s.

Wednesday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 40s.

Thursday: Mostly cloudy with a 40 percent chance of rain. Highs in the upper 50s.

Thursday Night: Mostly cloudy. Lows in the lower 40s.

Friday through Saturday: Partly cloudy. Highs in the upper 50s. Lows around 40.

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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