Scs-Pryor Creek Site-20 dam
Scs-Pryor Creek Site-20
SCS-Pryor Creek Site-20, located in Chelsea, Oklahoma, is a state-regulated earth dam constructed in 1976 by the USDA NRCS with a primary purpose of flood risk reduction along the TR-Pryor Creek. The dam stands at a height of 25 feet and has a hydraulic height of 23 feet, with a length of 1380 feet and a storage capacity of 182 acre-feet. Despite being classified as having a low hazard potential, the dam poses a very high risk due to its location and structural characteristics.
Managed by the Oklahoma Water Resources Board (OWRB), the dam features a controlled spillway and a single valve outlet gate for water release. The dam is designated for inspection every 5 years, with the last inspection conducted in 1980. The risk assessment for SCS-Pryor Creek Site-20 places it at a very high level (1), highlighting the critical importance of monitoring and maintenance to ensure the safety and integrity of the structure for flood control and water resource management in the area.
With the surrounding area being prone to flooding and with a high risk assessment, ongoing monitoring and management of SCS-Pryor Creek Site-20 are crucial to mitigate potential risks and safeguard the local community and environment. As a key infrastructure for flood risk reduction, the dam serves as a critical component of the water resource and climate resilience efforts in Rogers County, Oklahoma, underscoring the need for proactive measures to address any potential vulnerabilities and ensure the long-term effectiveness of the structure in protecting against flooding events.
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 Scs-Pryor Creek Site-20 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big Cabin Creek Near Big Cabin | 117 cfs | → |
| Verdigris River Near Lenapah | 2,510 cfs | → |
| Neosho River Near Langley | 13,500 cfs | → |
| Caney River Near Ramona | 213 cfs | → |
| Verdigris River Near Claremore | 512 cfs | → |
| Neosho River Near Chouteau | 1,140 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Scs-Pryor Creek Site-20.
Campgrounds
- Big Creek Ramp - Oologah Lake
- Cherokee State Park
- Snowdale State Park
- Spavinaw State Park
- Bernice State Park
- Chouteau Bend - Fort Gibson Lake
Fishing spots
Track Scs-Pryor Creek Site-20 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 Scs-Pryor Creek Site-20
Where does the data for Scs-Pryor Creek Site-20 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 Scs-Pryor Creek Site-20.