Olson Dam 1529

TR-BIG BLUE RIVER· Polk, Nebraska· Built 1975· Earth· 23 ft tall
Low Hazard Flood Risk Reduction Private

Key Takeaway

Olson Dam 1529 is classified as low hazard in Nebraska. It was completed in 1975 and is 51 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 23 ft (taller than 39.7% in NE)
Dam Length311 ft
Dam TypeEarth
Max Storage146 acre-ft
Normal Storage76 acre-ft
Surface Area11 acres
Drainage Area1 sq mi
Max Discharge255 cfs
Year Completed1975 (51 years old)
NID IDNE01529

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 16, 2019
State Regulated: Yes
Regulatory Agency: NE DNR

Ownership

Twogood Land, LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Olson Dam 1529?

Olson Dam 1529 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 Olson Dam 1529?

Olson Dam 1529 is owned by Twogood Land, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Olson Dam 1529 built?

Olson Dam 1529 was completed in 1975, making it 51 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 Olson Dam 1529?

Olson Dam 1529 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Olson Dam 1529?

Olson Dam 1529 has a dam height of 23 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 Olson Dam 1529 last inspected?

Olson Dam 1529 was last inspected on May 16, 2019. 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.