Iverson Dam; Marvin

Iverson Dam; Marvin is an earth dam located in Williams County, North Dakota, built in 1964. It carries a Significant hazard potential classification.

About Iverson Dam; Marvin

The primary purpose of Iverson Dam; Marvin is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Deon And Shana Iverson (private). It impounds the Dry Fork Dam near N.

The dam stands 35 feet tall and stretches 1,000 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 169 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1964, the structure is well into its service life at over 50 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 11/06/2020.

At 35 feet, this dam is taller than 82% of dams nationwide.

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Significant HazardNot Rated ConditionEmergency Action Plan: No

Location

StateNorth Dakota
CountyWilliams
Nearest CityN
River/StreamDry Fork Dam
Coordinates48.22799, -102.94695

Physical Characteristics

Dam TypeEarth
NID Height35 ft
Dam Height35 ft
Dam Length1,000 ft
Year Completed1964 (62 years old)

Storage & Hydraulics

NID Storage169 acre-ft
Max Storage169 acre-ft
Normal Storage79 acre-ft
Surface Area10 acres
Drainage Area1 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerDeon and Shana Iverson
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Last Inspection11/06/2020
Emergency Action PlanNo

Identifiers

NID IDND00424
Federal IDND00424
More InfoState Dam Safety Program

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