Cummings Dam

SAN MARCOS RIVER· Hays, Texas· Built 1905· Other· 10 ft tall
Significant Hazard Irrigation Private

Key Takeaway

Cummings Dam is classified as significant hazard in Texas. It was completed in 1905 and is 121 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 10 ft (taller than 3.8% in TX)
Dam Length250 ft
Dam TypeOther
Max Storage300 acre-ft
Normal Storage194 acre-ft
Surface Area50 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1905 (121 years old)
NID IDTX06991

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: No
Last Inspection: July 17, 2008
State Regulated: No

Ownership

PECAN FARMS AND CATTLE CO

Private

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Frequently Asked Questions

What is the hazard classification of Cummings Dam?

Cummings Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Cummings Dam?

Cummings Dam is owned by PECAN FARMS AND CATTLE CO (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Cummings Dam built?

Cummings Dam was completed in 1905, making it 121 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 Cummings Dam?

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

How tall is Cummings Dam?

Cummings Dam has a dam height of 10 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.

When was Cummings Dam last inspected?

Cummings Dam was last inspected on July 17, 2008. Inspection dates indicate when a formal review occurred, not the results of that inspection.

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.