Erwin Lake Dam is an earth dam located in Denton County, Texas, built in 1975. It carries a Low hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall and 630 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Erwin Lake Dam
The primary purpose of Erwin Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Finley Ewing (private). It impounds the Tr-graham Branch.
The dam stands 24 feet tall and stretches 630 feet across, creates a reservoir covering 6 acres, and has a maximum storage capacity of 97 acre-feet. Completed in 1975, the structure is well into its service life at over 50 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.
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Location
| State | Texas |
| County | Denton |
| River/Stream | Tr-graham Branch |
| Coordinates | 33.06114, -97.22399 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 630 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 97 acre-ft |
| Max Storage | 97 acre-ft |
| Normal Storage | 61 acre-ft |
| Surface Area | 6 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | Finley Ewing |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX04935 |
| Federal ID | TX04935 |
| More Info | State Dam Safety Program |