Mangus Lake Dam is an earth dam located in Starr County, Texas, built in 1977. It carries a Significant hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 1,500 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 Mangus Lake Dam
The primary purpose of Mangus Lake Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Fernando Pena (private). It impounds the Arroyo Morteros near Falcon Heights.
The dam stands 20 feet tall and stretches 1,500 feet across, creates a reservoir covering 26 acres, and has a maximum storage capacity of 284 acre-feet. Completed in 1977, the structure is 49 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 03/11/2009. That was over 17 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Texas |
| County | Starr |
| Nearest City | Falcon Heights |
| River/Stream | Arroyo Morteros |
| Coordinates | 26.58000, -99.10667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 1,500 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 284 acre-ft |
| Max Storage | 284 acre-ft |
| Normal Storage | 173 acre-ft |
| Surface Area | 26 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Fernando Pena |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 03/11/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX05737 |
| Federal ID | TX05737 |
| More Info | State Dam Safety Program |