Reservoir · Texas · United States · USGS NWIS
Lake Conroe
94.0% full
Capacity
513.41 hm³
Volume stored
483 hm³
Coordinates
30.359°N, 95.561°W
Last updated
2026-09-30
Current fill
94.0%vs 7 days ago
-0.9%losing
vs 1 year ago
-4.6%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: 2026-09-30.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 30.359, -95.561 · Open in Google Maps
About Lake Conroe
As of September 30, 2026, Lake Conroe is filled to 94.0% of its total capacity, holding roughly 483 hm³ of water out of a maximum 513 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.9 pts), and it is 4.6 points below its level on the same date a year earlier.
Across the readings we hold for Lake Conroe — 1461 data points between October 1, 2022 and September 30, 2026 — the level has ranged from a low of 89.1% (November 18, 2022) to a high of 105.0% (April 7, 2023). On average the reservoir is fullest around May and at its lowest around October.
It is operated by USGS primarily for multiple purposes. It lies within the Texas basin at 30.359°N, 95.561°W.
Key facts
- Current fill level
- 94.0%
- Water stored
- 483 hm³
- Total capacity
- 513 hm³
- 7-day change
- ▼ 0.9 pts
- Year-on-year
- ▼ 4.6 pts
- Primary use
- Multipurpose
- River basin
- Texas
- Operator
- USGS
- Coordinates
- 30.359°N, 95.561°W
- Last updated
- September 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Sep 2026 | 94.0% | 483 |
| 29 Sep 2026 | 94.2% | 483 |
| 28 Sep 2026 | 94.3% | 484 |
| 27 Sep 2026 | 94.4% | 485 |
| 26 Sep 2026 | 94.5% | 485 |
| 25 Sep 2026 | 94.6% | 486 |
| 24 Sep 2026 | 94.8% | 487 |
| 23 Sep 2026 | 94.9% | 487 |
| 22 Sep 2026 | 95.0% | 488 |
| 21 Sep 2026 | 95.1% | 488 |
| 20 Sep 2026 | 95.1% | 488 |
| 19 Sep 2026 | 95.2% | 489 |