Mcnairycypress Creek #15 dam
Mcnairycypress Creek #15
Mcnairycypress Creek #15, also known as Mcnairy Cypress Creek W/S Dam 17, is a vital structure located in Selmer, Tennessee, designed by USDA NRCS & HAL PRIDGEON, JR OF PRATHER.THOMAS.CAMPBELL.PRIDGEON. This earth-type dam serves multiple purposes, including flood risk reduction, debris control, and providing a habitat for fish and wildlife in the Sulfur Branch stream. Completed in 1982, this dam has a hydraulic height of 24 feet and a structural height of 29.4 feet, with a storage capacity of 880 acre-feet and a surface area of 35 acres.
Managed by the Tennessee Safe Dams Program, Mcnairycypress Creek #15 has a high hazard potential but is currently in satisfactory condition as of the last inspection in April 2020. With a drainage area of 1.52 square miles, this dam plays a crucial role in mitigating flood risks in the region. Despite its moderate risk rating, the dam has not undergone any modifications in recent years and does not have an Emergency Action Plan (EAP) in place.
Water resource and climate enthusiasts will find Mcnairycypress Creek #15 to be a fascinating example of a well-maintained earth dam that serves both flood control and ecological conservation purposes. Its location in McNairy County, Tennessee, along with its importance in the local water management system, makes it a significant structure worth studying and monitoring for the broader understanding of water resource management and climate resilience efforts in the region.
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 Mcnairycypress Creek #15 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Horse Creek Near Savannah | 54 cfs | → |
| Hatchie River Near Walnut | 86 cfs | → |
| Hatchie River At Bolivar | 1,460 cfs | → |
| Middle Fork Forked Deer River Near Fairview | 215 cfs | → |
| Wolf River At Lagrange | 180 cfs | → |
| Bear Creek At Bishop | 4,330 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mcnairycypress Creek #15.
Boat launches
- Wharf Road, Savannah
- Tennessee River Lane 475, Savannah
- White Oak Wildlife Road, Sardis
- Highway 57 23970-23972, Pocahontas
- Branun Cemetery Road, Savannah
- Main Street 499, Saltillo
Campgrounds
- Big Hill Pond State Park Campground
- Big Hill Pond Sp - Grassy Point Shelter
- Pickwick Dam - Tva
- Pickwick Landing Sp - Trail Camps
- Chickasaw State Park - Tent
Paddle runs
Track Mcnairycypress Creek #15 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 Mcnairycypress Creek #15
Where does the data for Mcnairycypress Creek #15 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 High 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 Mcnairycypress Creek #15.