Grothaus Lake Dam

BLACK HILL BRANCH· Bexar, Texas· Built 1950· Earth· 14 ft tall
Low Hazard Irrigation Recreation Private

Key Takeaway

Grothaus Lake Dam is classified as low hazard in Texas. It was completed in 1950 and is 76 years old. Its primary use is irrigation.

Physical Details

Dam Height 14 ft (taller than 12.5% in TX)
Dam Length997 ft
Dam TypeEarth
Max Storage56 acre-ft
Normal Storage28 acre-ft
Surface Area0 acres
Drainage Area0 sq mi
Year Completed1950 (76 years old)
NID IDTX05231

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
State Regulated: Yes
Regulatory Agency: TCEQ

Ownership

FRED GROTHAUS

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Grothaus Lake Dam?

Grothaus Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Grothaus Lake Dam?

Grothaus Lake Dam is owned by FRED GROTHAUS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Grothaus Lake Dam built?

Grothaus Lake Dam was completed in 1950, making it 76 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Grothaus Lake Dam?

Grothaus Lake Dam serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Grothaus Lake Dam?

Grothaus Lake Dam has a dam height of 14 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.