Reservoir · Texas · United States · USGS NWIS
Choke Canyon Reservoir
22.7% full
Capacity
880.85 hm³
Volume stored
200 hm³
Coordinates
28.484°N, 98.246°W
Last updated
2026-08-13
Current fill
22.7%vs 7 days ago
-0.3%losing
vs 1 year ago
+11.0%year-over-year
7-day trend
→stable
Data source: USGS National Water Information System (NWIS) — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-08-13.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 28.484, -98.246 · Open in Google Maps
About Choke Canyon Reservoir
As of August 13, 2026, Choke Canyon Reservoir is filled to 22.7% of its total capacity, holding roughly 200 hm³ of water out of a maximum 881 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (-0.3 pts), and it is 11.0 points above its level on the same date a year earlier.
Across the readings we hold for Choke Canyon Reservoir — 1461 data points between August 14, 2022 and August 13, 2026 — the level has ranged from a low of 6.7% (May 16, 2026) to a high of 35.0% (September 5, 2022). On average the reservoir is fullest around September and at its lowest around June.
It is operated by USGS primarily for multiple purposes. It lies within the Texas basin at 28.484°N, 98.246°W.
Key facts
- Current fill level
- 22.7%
- Water stored
- 200 hm³
- Total capacity
- 881 hm³
- 7-day change
- ▼ 0.3 pts
- Year-on-year
- ▲ 11.0 pts
- Primary use
- Multipurpose
- River basin
- Texas
- Operator
- USGS
- Coordinates
- 28.484°N, 98.246°W
- Last updated
- August 13, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 13 Aug 2026 | 22.7% | 200 |
| 12 Aug 2026 | 22.8% | 201 |
| 11 Aug 2026 | 22.8% | 201 |
| 10 Aug 2026 | 22.9% | 202 |
| 9 Aug 2026 | 22.9% | 202 |
| 8 Aug 2026 | 23.0% | 202 |
| 7 Aug 2026 | 23.0% | 202 |
| 6 Aug 2026 | 23.0% | 203 |
| 5 Aug 2026 | 23.1% | 203 |
| 4 Aug 2026 | 23.1% | 204 |
| 3 Aug 2026 | 23.2% | 204 |
| 2 Aug 2026 | 23.2% | 204 |
Frequently asked questions
What is the current water level of Choke Canyon Reservoir?
As of August 13, 2026, Choke Canyon Reservoir is at 22.7% of its capacity, holding approximately 200 hm³ of water, according to USGS NWIS data.
Is Choke Canyon Reservoir reservoir full?
No. As of August 13, 2026, Choke Canyon Reservoir is low at 22.7% of its capacity, so it is not full.
Is the water level at Choke Canyon Reservoir rising or falling?
The level at Choke Canyon Reservoir has been broadly stable over the latest week on record (-0.3 points).
How much water can Choke Canyon Reservoir hold?
Choke Canyon Reservoir has a total capacity of 881 hm³.
Where is Choke Canyon Reservoir reservoir located?
Choke Canyon Reservoir is located in Texas, United States, within the Texas basin (coordinates 28.484°N, 98.246°W).
What is Choke Canyon Reservoir used for?
Choke Canyon Reservoir is used primarily for multiple purposes, and is managed by USGS.