Green River Dam dam
Green River Dam
The Green River Dam, located in Stark, North Dakota, was completed in 1933 by the Civilian Conservation Corps (CCC) and stands at a height of 12 feet with a structural height of 14 feet. This masonry dam on the Green River serves primarily for recreational purposes and has a storage capacity of 60 acre-feet. The dam is under the regulatory jurisdiction of the North Dakota State Water Commission and is regularly inspected, permitted, and enforced to ensure its safety and functionality.
With a low hazard potential and a moderate risk assessment rating, the Green River Dam is considered a vital structure for water resource management in the area. The dam features an uncontrolled spillway, measuring 90 feet in width, and has not been modified since 1950 when structural improvements were made. Despite not being currently rated for condition assessment, the dam is still considered to be in good standing and meets regulatory guidelines for operation and maintenance.
The Green River Dam stands as a testament to the ingenuity and craftsmanship of the CCC, providing both recreational opportunities and essential water resource management for the surrounding community. With a focus on safety and compliance with state regulations, this masonry dam continues to play a crucial role in maintaining the integrity of the Green River and ensuring the safety of those downstream.
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 Green River Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Heart River Nr South Heart | 1 cfs | → |
| Heart River Nr Richardton | 22 cfs | → |
| Green River Nr New Hradec | 1 cfs | → |
| Knife River At Manning | 1 cfs | → |
| Knife River Nr Golden Valley | 13 cfs | → |
| Heart R Ab Lake Tschida Nr Glen Ullin | 24 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Green River Dam.
Boat launches
- 30th Avenue Southwest Stark County
- 8th Street Southwest Stark County
- 114th Avenue Southwest Stark County
- Lake Ilo Boating Access
Campgrounds
- Patterson Lake Rec Area Campground
- Schnell Recreation Area
- Camp Site 1
- Camp Site 2
- Camp Site 3
- Camp Site 4
Paddle runs
- Southern Boundary Of The South Unit Of Theodore Roosevelt National Park To Northern Boundary Of The South Unit Of Theodore Roosevelt National Park
- Southern Boundary Of The Elkhorn Unit Of Theodore Roosevelt National Park To Northern Boundary Of The Elkhorn Unit Of Theodore Roosevelt National Park
Track Green River Dam 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 Green River Dam
Where does the data for Green River Dam 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 Green River Dam.