M. Scism No.2 dam
M. Scism No.2
M. Scism No.2 is a privately owned dam located in Custer, South Dakota, along the TR-CHEYENNE river. Built in 1946, this earth dam stands at 27 feet high and spans 200 feet in length. With a storage capacity of 20 acre-feet and a maximum discharge of 680 cubic feet per second, M. Scism No.2 plays a crucial role in water management within the region.
Despite being classified as having a low hazard potential and not yet rated for its condition, M. Scism No.2 is regulated, permitted, inspected, and enforced by the South Dakota Department of Environment and Natural Resources. Its jurisdiction falls under state oversight, ensuring that the dam meets safety standards and operational requirements. While the dam has not undergone recent inspections or condition assessments, its emergency action plan status, risk assessment, and management measures remain unspecified.
Managed by private owners, M. Scism No.2 serves as a vital infrastructure for water resource management in the area. Its historical significance and role in maintaining water levels along the TR-CHEYENNE river highlight the importance of continued monitoring and maintenance to ensure its safety and functionality for the surrounding community and environment.
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 M. Scism No.2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Battle Cr Below Hermosa Sd | 3 cfs | → |
| Cheyenne River At Redshirt | 65 cfs | → |
| Rapid Cr Near Farmingdale Sd | 47 cfs | → |
| Battle Cr At Hermosa Sd | 4 cfs | → |
| Cheyenne R Near Buffalo Gap Sd | 74 cfs | → |
| Rapid Cr Bl Sewage Treatment Pl Nr Rapid City | 40 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near M. Scism No.2.
Campgrounds
- French Creek Camping Area
- French Creek Campground
- French Creek
- Game Lodge - Custer State Park
- Spokane Creek Cabins & Campground
- Rapid City - Black Hills Koa
Fishing spots
- Lakota Lake
- Horsethief Lake Day Use Site
- Bismark Lake
- Sheridan Lake Complex
- Rapid Creek Trailhead & Fishing Access
- Veterans Point Fishing Pier
More reservoirs
Track M. Scism No.2 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 M. Scism No.2
Where does the data for M. Scism No.2 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 M. Scism No.2.