| Aquilla Lake | |
|---|---|
 Aquilla Dam and Lake | |
  Aquilla Lake  Aquilla Lake | |
| Location | Hill County, Texas |
| Coordinates | 31°54′34″N 97°12′12″W / 31.90944°N 97.20333°W |
| Type | reservoir |
| Primary inflows | Aquilla Creek, Hackberry Creek |
| Primary outflows | Aquilla Creek |
| Catchment area | 255 sq mi (660 km2) |
| Basin countries | United States |
| Surface area | 3,280 acres (1,330 ha) |
| Average depth | 59.5 ft (18.1 m) |
| Water volume | 54,400 acre⋅ft (67,100,000 m3) (normal conservation pool) 146,000 acre⋅ft (180,000,000 m3) (flood pool) |
| Surface elevation | 537 ft (163.7 m) (normal conservation pool) 556 ft (169.5 m) (flood pool) |
Aquilla Lake is an artificial lake (reservoir) in Hill County, Texas, USA. The dam was constructed by the U.S. Army Corps of Engineers. The dam is part of the overall flood control project in the Brazos River basin. The lake is located approximately 23 miles (37 km) north of Waco, Texas, and directly north of the town of Aquilla.
The dam was built and is owned by the U.S. Army Corps of Engineers. The lake is formed by an earthfill dam with a crest length of 11,890 feet (3,624 m) and a top width of 38 feet (11.6 m). A reinforced concrete inlet structure near the center of dam houses the flood-control gates and operating equipment. Closure of the dam began March 20, 1982, and the dam was completed in January 1983. Deliberate impoundment began April 29, 1983. The lake was built for water supply, flood control, and recreation purposes. Figures given herein represent total contents. Data regarding the dam and lake are given in the following table (USGS data):
| Elevation | Capacity | |||
|---|---|---|---|---|
| (ft) | (m) | (acre-feet) | (million m³) | |
| Top of dam | 582.5 | 177.6 | ||
| Spillway crest (uncontrolled) | 564.5 | 172.1 | 213,700 | 263.6 |
| Top of flood-control pool | 556.0 | 169.5 | 146,000 | 180.1 |
| Top of conservation pool | 537.5 | 163.8 | 52,400 | 64.6 |
| Invert, lowest gated outlet | 503.0 | 153.3 | 932 | 1.1 |
| Record maximum (1991-12-23) | 551.9 | 168.2 | 119,000 | 146.8 |
| Record minimum (1983-10-10) | 511.3 | 155.8 | 4,600 | 5.7 |
Recreational activities on the lake include boating, fishing, hunting, and wildlife viewing.