Herzog Dam, also known as Tongue River WS Dam T3-6, is a local government-owned structure in Pembina, North Dakota, designed by the USDA NRCS.
Wind
Humidity
Completed in 1957, this earth dam stands at a height of 38 feet with a structural height of 46 feet and a length of 794 feet. It serves the primary purpose of flood risk reduction along the Tongue River-TR, with a normal storage capacity of 80 acre-feet and a maximum storage of 2,430 acre-feet. The dam features an uncontrolled spillway with a width of 450 feet and a single slide (sluice gate) outlet gate.
Given its location in a significant hazard potential area, Herzog Dam has undergone a structural modification in 1985 to enhance its resilience. The dam is under the regulatory oversight of the North Dakota State Water Commission (NDSWC), ensuring regular inspections, permitting, and enforcement to maintain its safety and functionality. Although the condition assessment is not rated, the risk assessment categorizes the dam's risk level as moderate, indicating the need for ongoing risk management measures. While no Emergency Action Plan (EAP) details are provided, the dam's emergency preparedness and communication protocols are critical for effective response in case of potential inundation events. This dam serves as a vital infrastructure for flood control and water resource management in the region, highlighting the importance of sustainable dam operations and maintenance for climate resilience.
Years Modified |
1985 - Structural |
Year Completed |
1957 |
Dam Length |
794 |
Dam Height |
38 |
River Or Stream |
TONGUE RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
18.4 |
Drainage Area |
16.65 |
Nid Storage |
2430 |
Structural Height |
46 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
Significant |
Foundations |
Rock, Soil |
Nid Height |
46 |
Tongue River At Akra
|
53cfs |
Little South Pembina River Nr Walhalla
|
5cfs |
Pembina River At Walhalla
|
138cfs |
Pembina River At Neche
|
188cfs |
Park River At Grafton
|
26cfs |
Red River Of The North At Drayton
|
1650cfs |
| Location | Reservations | Toilets |
|---|---|---|
Legion - Mountain
|
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Icelandic State Park
|
||
Walhalla Riverside City Park
|