Reservoir · Texas · United States · BOR RISE
Lake Nasworthy
Lake Nasworthy and Dam
93.2% full
Capacity
12.47 hm³
Volume stored
12 hm³
Coordinates
31.389°N, 100.478°W
Last updated
2026-09-09
Current fill
93.2%vs 7 days ago
+0.4%gaining
vs 1 year ago
+1.5%year-over-year
7-day trend
→stable
Data source: BOR RISE — US Bureau of Reclamation — 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: 2026-09-09.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 31.389, -100.478 · Open in Google Maps
About Lake Nasworthy
As of September 9, 2026, Lake Nasworthy is filled to 93.2% of its total capacity, holding roughly 12 hm³ of water out of a maximum 12 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.4 pts), and it is 1.5 points above its level on the same date a year earlier.
Across the readings we hold for Lake Nasworthy — 1884 data points between September 12, 2021 and September 9, 2026 — the level has ranged from a low of 67.8% (December 17, 2021) to a high of 105.0% (November 8, 2024). On average the reservoir is fullest around January and at its lowest around October.
It is operated by BOR primarily for multiple purposes. It lies within the Texas basin at 31.389°N, 100.478°W.
Key facts
- Current fill level
- 93.2%
- Water stored
- 12 hm³
- Total capacity
- 12 hm³
- 7-day change
- ▲ 0.4 pts
- Year-on-year
- ▲ 1.5 pts
- Primary use
- Multipurpose
- River basin
- Texas
- Operator
- BOR
- Coordinates
- 31.389°N, 100.478°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 93.2% | 12 |
| 8 Sep 2026 | 93.2% | 12 |
| 7 Sep 2026 | 93.3% | 12 |
| 6 Sep 2026 | 93.3% | 12 |
| 5 Sep 2026 | 93.3% | 12 |
| 4 Sep 2026 | 93.2% | 12 |
| 3 Sep 2026 | 93.2% | 12 |
| 2 Sep 2026 | 92.8% | 12 |
| 1 Sep 2026 | 92.3% | 12 |
| 31 Aug 2026 | 92.1% | 11 |
| 30 Aug 2026 | 92.1% | 11 |
| 29 Aug 2026 | 92.5% | 12 |