Whittier Narrows Dam Rio Hondo Lake Water Level Today
California · near Pico Rivera · Below full pool
- Elevation
- 183.28 ft
- From full pool
- −18.32 ft
- Percent of pool
- n/a
- 24-hour change
- −0.02 ft
- 7-day change
- +0.15 ft
- Reading
- Sep 21, 2026 · USACE
Last year at Whittier Narrows Dam Rio Hondo Lake
Whittier Narrows Dam Rio Hondo Lake is 18.32 ft below full pool, at 183.28 ft, down 0.02 ft in the last 24 hours. The top of the flood pool is 45.2 ft higher, at 228.50 ft.
Over the last 7 days the level rose 0.15 ft, and over 30 days it held steady. In the 394 days of readings on this page the high was 200.65 ft on Feb 20, 2026 and the low was 183.11 ft on Aug 17, 2025, a range of 17.54 ft.
The reading is the U.S. Army Corps of Engineers gauge at Whittier Narrows Dam Rio Hondo, near Pico Rivera, taken Sep 21, 2026 and referenced to the NGVD29 datum. This page is rebuilt once a day from the agency feed; it is not a live gauge, so during a fast rise or a scheduled release check the USACE page for hourly values.
Whittier Narrows Dam Rio Hondo Lake pool elevations
| Current elevation | 183.28 ft |
|---|---|
| Full pool (top of conservation) | 201.60 ft |
| Top of flood pool | 228.50 ft |
| Top of dam | 239.00 ft |
| Inflow | 23 cfs |
| Outflow | 23 cfs |
| 30-day change | no change |
| 1-year high | 200.65 ft (Feb 20, 2026) |
| 1-year low | 183.11 ft (Aug 17, 2025) |
| Vertical datum | NGVD29 |
| Operating agency | U.S. Army Corps of Engineers, SPL district |
Source: U.S. Army Corps of Engineers. Read what full pool and flood pool mean.
More lakes in California
- Lake Oroville 767.67 ft, −128.29 ft from full
- Shasta Lake 984.99 ft, −81.78 ft from full
- Folsom Lake 408.15 ft, −57.85 ft from full
- Lake Isabella 2,557.94 ft, −26.04 ft from full
- New Melones Lake 1,007.63 ft, −75.95 ft from full
- Pine Flat Lake 742.21 ft, −209.11 ft from full
Whittier Narrows Dam Rio Hondo Lake level questions
What is the water level of Whittier Narrows Dam Rio Hondo Lake today?
Whittier Narrows Dam Rio Hondo Lake is at 183.28 ft as of Sep 21, 2026, −18.32 ft relative to full pool (201.60 ft). The 24-hour change is −0.02 ft.
What is full pool at Whittier Narrows Dam Rio Hondo Lake?
Full pool, the top of the conservation pool, is 201.60 ft (NGVD29). Above that, water is stored temporarily in the flood pool up to 228.50 ft.
Is Whittier Narrows Dam Rio Hondo Lake rising or falling?
Over the last 24 hours the level is −0.02 ft; over 7 days it rose 0.15 ft, and over 30 days it held steady.
Where does this Whittier Narrows Dam Rio Hondo Lake level come from?
From the U.S. Army Corps of Engineers (USACE) public data feed for Whittier Narrows Dam Rio Hondo. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.