De Trobriand Gma #4 dam
De Trobriand Gma #4
De Trobriand Gma #4 is a federal-owned Fish and Wildlife Pond located in McLean, North Dakota. Built in 1986, the earthen dam stands at a height of 11 feet and spans 300 feet in length, with a storage capacity of 56.9 acre-feet and a surface area of 12.3 acres. The dam serves as a critical habitat for fish and wildlife in the area, with the primary purpose of providing a safe and sustainable ecosystem for local species.
Managed by the North Dakota State Water Commission, De Trobriand Gma #4 is regulated, permitted, inspected, and enforced to ensure the safety and integrity of the structure. With a low hazard potential and moderate risk assessment, the dam is classified as not rated in terms of condition assessment. Although emergency preparedness measures such as an Emergency Action Plan (EAP) and inundation maps are not specified, the dam is equipped with an uncontrolled spillway with a width of 100 feet to manage excess water flow.
Overall, De Trobriand Gma #4 plays a vital role in maintaining the ecological balance and biodiversity of the surrounding area. With its strategic location on the Lake Sakakawea-TR stream and its Federal ownership under the NDGF, the dam serves as a key resource for water conservation, wildlife preservation, and environmental sustainability in North Dakota.
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 De Trobriand Gma #4 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Knife River At Hazen | 50 cfs | → |
| Spring Creek At Zap | 14 cfs | → |
| Deepwater Creek At Mouth Nr Raub | 4 cfs | → |
| Square Butte Creek Below Center | 1 cfs | → |
| Souris River Above Minot | 12 cfs | → |
| Knife River Nr Golden Valley | 10 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near De Trobriand Gma #4.
Boat launches
- 38th Avenue Northwest Mclean County
- Mclean County
- 14th Street Northwest Mclean County
- Totten Trails Boat Ramp Mclean County
Campgrounds
- Lake Sakakawea Sp - Fishing Point
- Douglas Creek - Coe
- Hazen Bay Rec Area Campground
- Max City Rv Park
- Rice Lake County Park
Paddle runs
Track De Trobriand Gma #4 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 De Trobriand Gma #4
Where does the data for De Trobriand Gma #4 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 De Trobriand Gma #4.