Larson

PICEANCE CR-TR· Rio Blanco, Colorado· Built 1888· Earth· 21 ft tall
Low Hazard Water Supply Irrigation Private

Key Takeaway

Larson is classified as low hazard in Colorado. It was completed in 1888 and is 138 years old. Its primary use is water supply.

Physical Details

Dam Height 21 ft (taller than 40.7% in CO)
Dam Length66 ft
Dam TypeEarth
Max Storage74 acre-ft
Normal Storage62 acre-ft
Surface Area4 acres
Drainage Area0 sq mi
Max Discharge273 cfs
Year Completed1888 (138 years old)
NID IDCO01932

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
Last Inspection: May 12, 2020
State Regulated: Yes
Regulatory Agency: DWR

Ownership

NATURAL SODA, INC. (DAEHLING, KIRK)

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Larson?

Larson 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 Larson?

Larson is owned by NATURAL SODA, INC. (DAEHLING, KIRK) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Larson built?

Larson was completed in 1888, making it 138 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 Larson?

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

How tall is Larson?

Larson has a dam height of 21 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 Larson last inspected?

Larson was last inspected on May 12, 2020. 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.