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Full-history daily elevation and storage CSVs for every reservoir tracked.
Western Reservoir Conditions·Daily·No. 3·
One CSV per reservoir with the full daily period of record, updated daily, stable URLs. Columns: date (YYYY-MM-DD), elevation_ft (daily surface elevation, feet above sea level), storage_af (storage in acre-feet). Missing values are left blank, never zero-filled. Sources: USBR RISE (Colorado system), CDEC (California), and TWDB (Texas & Rio Grande) — details on the about page.
| File | Reservoir | Coverage | Latest reading |
|---|---|---|---|
| lake-mead.csv | Lake Mead | since February 2, 1935 | July 24, 2026 |
| lake-powell.csv | Lake Powell | since June 28, 1963 | July 24, 2026 |
| lake-mohave.csv | Lake Mohave | since January 8, 1950 | July 24, 2026 |
| lake-havasu.csv | Lake Havasu | since October 1, 1938 | July 24, 2026 |
| flaming-gorge.csv | Flaming Gorge Reservoir | since December 2, 1962 | July 24, 2026 |
| blue-mesa.csv | Blue Mesa Reservoir | since November 30, 1965 | July 24, 2026 |
| navajo.csv | Navajo Reservoir | since June 26, 1962 | July 24, 2026 |
| shasta.csv | Shasta Lake | since January 1, 1985 | July 24, 2026 |
| oroville.csv | Lake Oroville | since October 1, 1985 | July 24, 2026 |
| folsom.csv | Folsom Lake | since October 1, 1985 | July 24, 2026 |
| berryessa.csv | Lake Berryessa | since January 1, 1985 | July 24, 2026 |
| new-melones.csv | New Melones Lake | since October 1, 1985 | July 24, 2026 |
| trinity-lake.csv | Trinity Lake | since January 1, 1980 | July 24, 2026 |
| don-pedro.csv | Don Pedro Reservoir | since January 1, 1985 | July 24, 2026 |
| san-luis.csv | San Luis Reservoir | since January 4, 1988 | July 24, 2026 |
| lake-travis.csv | Lake Travis | since September 30, 1940 | July 25, 2026 |
| lake-buchanan.csv | Lake Buchanan | since June 30, 1937 | July 25, 2026 |
| canyon-lake.csv | Canyon Lake | since July 25, 1962 | July 25, 2026 |
| amistad.csv | Amistad Reservoir | since June 1, 1968 | July 25, 2026 |
| falcon.csv | Falcon Lake | since August 23, 1953 | July 25, 2026 |
| elephant-butte.csv | Elephant Butte Reservoir | since March 21, 1915 | July 25, 2026 |
All data is US-government public domain; these files just repackage it. Attribution appreciated: link to reservoirbench.com.