Dvirnak Dam; Lorin dam
Dvirnak Dam; Lorin
Dvirnak Dam in Lorin, North Dakota, is a private earth dam completed in 1947 with a primary purpose of serving as a fish and wildlife pond. Designed by Jill Helmuth, this structure stands at a height of 15 feet and has a storage capacity of 79 acre-feet. With a low hazard potential and a moderate risk assessment rating, the dam is regulated by NDSWC and undergoes regular state inspection, permitting, and enforcement to ensure its safety and functionality.
Located on Spring Creek, Dvirnak Dam spans 8.7 acres and has a drainage area of 0.23 square miles. The spillway, with a width of 130 feet, is uncontrolled, and the dam has undergone structural modifications in 1987 and 1998. Although the condition of the dam is currently not rated, it meets state jurisdiction requirements and has a history of state oversight, reflecting a commitment to maintaining its integrity for the benefit of fish and wildlife in the area.
With its stone core and soil foundation, Dvirnak Dam exemplifies the intersection of water resource management and environmental conservation. As a vital habitat for local wildlife, this structure serves as a testament to the importance of sustainable water infrastructure in supporting biodiversity and ecological balance. Its history of careful regulation and maintenance underscores the critical role of dams in preserving natural resources and adapting to the challenges of climate change in the region.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Dvirnak Dam; Lorin -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Knife River At Manning | 1 cfs | → |
| Little Missouri River Nr Watford City | 37 cfs | → |
| Green River Nr New Hradec | 3 cfs | → |
| Bear Den Creek Nr Mandaree | 7 cfs | → |
| Heart River Nr South Heart | 3 cfs | → |
| Little Missouri River At Medora | 42 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Dvirnak Dam; Lorin.
Boat launches
Campgrounds
- Killdeer City Park
- Little Missouri Sp - Eastview Cg
- Little Missouri State Park
- Lake Ilo - Nd Gfd
- Little Missouri Sp - Main Cg
- Grassy Butte Community Park
Paddle runs
- Southern Boundary Of The Elkhorn Unit Of Theodore Roosevelt National Park To Northern Boundary Of The Elkhorn Unit Of Theodore Roosevelt National Park
- Southern Boundary Of The South Unit Of Theodore Roosevelt National Park To Northern Boundary Of The South Unit Of Theodore Roosevelt National Park
Track Dvirnak Dam; Lorin in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Dvirnak Dam; Lorin
Where does the data for Dvirnak Dam; Lorin come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Dvirnak Dam; Lorin.