Dam 20
Dam 20 is an earth dam located in Coryell County, Texas, built in 1999. It carries a Low hazard potential classification and has a poor condition assessment.
About Dam 20
The primary purpose of Dam 20 is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Fort Cavazos (federal). It impounds the Coryell near Killeen.
The dam stands 27 feet tall and stretches 367 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 79 acre-feet. Completed in 1999, the structure is 27 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 09/14/2020.
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Location
| State | Texas |
| County | Coryell |
| Nearest City | Killeen |
| River/Stream | Coryell |
| Coordinates | 31.20896, -97.81057 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 367 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 79 acre-ft |
| Max Storage | 79 acre-ft |
| Normal Storage | 38 acre-ft |
| Surface Area | 4 acres |
| Max Discharge | 596 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Fort Cavazos |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/14/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX09513 |
| Federal ID | TX09513 |
| More Info | State Dam Safety Program |