Johnson Pooling Dam dam
Johnson Pooling Dam
Johnson Pooling Dam, located in Fannin County, Texas, is a privately-owned structure designed by the USDA NRCS and regulated by the Texas Commission on Environmental Quality. The dam, completed in 1986, serves multiple purposes including fire protection, stock watering, and creating a small fish pond. With a height of 27 feet and a length of 714 feet, the dam has a storage capacity of 153 acre-feet and covers a surface area of 12 acres.
The dam's spillway, measuring 55 feet wide, is uncontrolled and has a maximum discharge of 3 cubic feet per second. Despite being classified as having a fair condition assessment in 2018, the dam poses a moderate risk level. It is subject to regular inspections with a frequency of every 5 years to ensure its safety and functionality. The primary source agency for the dam is the state of Texas, with no federal agency involvement in its ownership, funding, or construction.
Overall, Johnson Pooling Dam plays a crucial role in water resource management in the region, providing essential services for the local community while also presenting certain risks that need to be monitored and managed effectively. For water resource and climate enthusiasts, this dam serves as an interesting case study in dam design, regulation, and maintenance within the state of Texas.
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 Johnson Pooling Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Indian Ck At Sh 78 Nr Farmersville | 26 cfs | → |
| Sister Grove Ck Nr Blue Ridge | 11 cfs | → |
| E Fk Trinity Rv Nr Mckinney | 174 cfs | → |
| Cowleech Fk Sabine Rv At Greenville | 67 cfs | → |
| Wilson Ck Dws Of Hwy 75 At Mckinney | 6 cfs | → |
| Middle Sulphur Rv At Commerce | 76 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Johnson Pooling Dam.
Boat launches
- West Audie Murphy Parkway Farmersville
- Twin Groves Park Road Collin County
- County Road 551 Collin County
- Collin County
- County Road 546 5431, Wylie
- Bratonia Park Road Collin County
Campgrounds
- Bonham State Park
- Erwin Park - Mckinney
- Tent Sites
- Equestrian Camp Sites
- Constellation Park Campsite #2
- Constellation Park Campsite #3
Fishing spots
Track Johnson Pooling Dam 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 Johnson Pooling Dam
Where does the data for Johnson Pooling Dam 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 Not Available 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 Johnson Pooling Dam.