Don Pedro Reservoir Water Level Today - 792.94 ft, 78.4% Full

New Don Pedro Dam · Tuolumne River · California - updated daily from official gauges

Western Reservoir Conditions·Daily·No. 47·Tuesday, September 8, 2026·Latest reading September 7, 2026

• Don Pedro Reservoir is 78.4% full - high on this site's capacity scale - as of September 7, 2026. Surface elevation 792.94 feet, storage 1,591,663 acre-feet (capacity basis 2,030,000 acre-feet), per California DWR (CDEC) gauge data.
• That elevation is 121.75 feet above its record low of 671.19 ft (October 9, 2015), in a daily record going back to January 1, 1985 (start of CDEC's daily record).
• Storage is 114% of the September 7 average across 39 years of record.
• Don Pedro Reservoir is falling: elevation changed -1.61 ft over the past week, -8.54 ft over the past month, and -2.77 ft over the past year, per California DWR (CDEC) gauge data.

Don Pedro Reservoir has fallen 2.77 feet in twelve months, and now sits 121.75 feet above its record low.

Don Pedro Reservoir vs its record low

In the daily record used by this site (going back to January 1, 1985 (start of CDEC's daily record)), Don Pedro Reservoir's lowest surface elevation was 671.19 feet on October 9, 2015, when storage was 628,612 acre-feet. As of September 7, 2026, Don Pedro Reservoir is at 792.94 feet - 121.75 feet above that record. The record high in the same series was 829.77 ft on July 30, 1995.

Don Pedro Reservoir storage in context

Don Pedro Reservoir water level, past 12 months

78.4% full at the latest reading - across the past 12 months it ranged from 74.5% (November 4, 2025) to 95.5% (May 31, 2026). Percent full is storage against the 2,030,000-acre-foot capacity basis, not a share of the elevation plotted above.

Don Pedro Reservoir elevation, full record

78.4% full at the latest reading - across the storage record since January 1, 1985 it ranged from 31.0% (October 8, 2015) to 100.8% (January 2, 1997). Percent full is storage against the 2,030,000-acre-foot capacity basis, not a share of the elevation plotted above. Every percentage here is measured against today's capacity basis; a reservoir's surveyed capacity changes as sediment accumulates behind the dam, so early-record percentages are indicative rather than exact.

Last 14 daily readings

Frequently asked questions

What is the water level of Don Pedro Reservoir today?

As of September 7, 2026, Don Pedro Reservoir's surface elevation is 792.94 feet, with 1,591,663 acre-feet in storage - 78.4% of the 2,030,000 acre-foot capacity basis. Source: California DWR CDEC daily gauge data.

How full is Don Pedro Reservoir?

Don Pedro Reservoir is 78.4% full as of September 7, 2026. Its storage is 114% of the September 7 average across its record since 1985. Source: California DWR CDEC daily gauge data.

When was Don Pedro Reservoir last full?

Don Pedro Reservoir was last at or above 95% of its 2,030,000 acre-foot capacity basis on June 10, 2026. As of September 7, 2026 it is 78.4% full. Source: California DWR CDEC daily gauge data.

Is Don Pedro Reservoir rising or falling?

Don Pedro Reservoir is falling: its elevation changed -1.61 feet over the week ending September 7, 2026, -8.54 ft over the past month, and -2.77 feet over the past year. Source: California DWR CDEC daily gauge data.

What was Don Pedro Reservoir's lowest water level on record?

Don Pedro Reservoir's lowest surface elevation in the daily record since January 1, 1985 was 671.19 feet on October 9, 2015, per the daily record used by this site. As of September 7, 2026 the reservoir is 121.75 feet above that record low.

About this gauge

Don Pedro Reservoir on the Tuolumne River is operated by the Turlock and Modesto irrigation districts and is among the largest reservoirs in California.

Operator

California Department of Water Resources (CDEC)

Station

Station DNP

Measurements

Sensor 6 (reservoir elevation), sensor 15 (storage), daily

Dam

New Don Pedro Dam

River

Tuolumne River

State

California

Coordinates

37.7020, -120.4210 (CDEC station DNP metadata)

Full pool reference

830.0 ft

Capacity basis

2,030,000 acre-feet (CDEC daily reservoir storage summary)

Period of record

January 1, 1985 (start of CDEC's daily record)

Status

Provisional - subject to revision by the reporting agency

Update cadence

Daily

Download the daily CSV (date, elevation ft, storage AF) or see all data downloads.

Other reservoirs tracked

California: Shasta Lake, Lake Oroville, Folsom Lake, Lake Berryessa, New Melones Lake, Trinity Lake, San Luis Reservoir.
Also: Lake Mead, Lake Powell, Lake Mohave, Lake Havasu, Flaming Gorge Reservoir, Blue Mesa Reservoir, Navajo Reservoir, Lake Travis, Lake Buchanan, Canyon Lake, Amistad Reservoir, Falcon Lake, Elephant Butte Reservoir.