Penrhos Farms #1 dam
Penrhos Farms #1
Penrhos Farms #1 is a privately owned dam located in Marshall, South Dakota, along the tributary of Wild Rice Creek. Built in 1982, this earthen dam stands at a height of 24 feet and has a storage capacity of 270 acre-feet. While the dam's primary purpose is not specified, it is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and undergoes regular inspections, enforcement, and permitting processes to ensure its safety and compliance with state regulations.
With a low hazard potential and a current condition assessment of "Not Rated," Penrhos Farms #1 poses minimal risk to the surrounding area. The dam has not been modified in recent years, and there is no Emergency Action Plan (EAP) in place for the structure. Despite these factors, the dam is equipped with outlet gates and a maximum discharge capacity of 4,160 cubic feet per second. The dam's location and design make it an essential component of the local water resource infrastructure, providing storage and regulation for the surrounding drainage area.
Although the dam's associated structures, inspection frequency, and maintenance details are not provided in the data, Penrhos Farms #1 remains a key feature in the region's water management system. As climate and water resource enthusiasts, understanding the importance of dams like Penrhos Farms #1 in regulating water flow, preventing flooding, and ensuring water security is crucial for sustainable water management practices in South 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 Penrhos Farms #1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Wild Rice River Nr Rutland | 51 cfs | → |
| James River At Nd-Sd State Line | 622 cfs | → |
| James R At Columbia Sd | 639 cfs | → |
| Elm R At Westport Sd | 31 cfs | → |
| Bear Creek Nr Oakes | 15 cfs | → |
| Maple R At Nd-Sd State Line | 16 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Penrhos Farms #1.
Boat launches
- Roy Lake State Park
- 137th Avenue Southeast Weber Township
- Tewaukon Township
- 101st Street Southeast Dickey County
- 88th Street Southeast 13838, Shuman Township
Track Penrhos Farms #1 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 Penrhos Farms #1
Where does the data for Penrhos Farms #1 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 Penrhos Farms #1.