Earnest L Johnson Dam dam
Earnest L Johnson Dam
Earnest L Johnson Dam, located in Nacogdoches, Texas, is a privately owned earth dam primarily used for irrigation purposes. Completed in 1960, this buttress-type dam stands at a height of 12 feet and stretches 440 feet in length, providing a storage capacity of 53 acre-feet. Situated on TR-Banita Creek, the dam plays a crucial role in managing water resources in the area, with a surface area of 2.9 acres and a drainage area of 0.13 square miles.
Despite its importance in irrigation, Earnest L Johnson Dam does not have a spillway and is rated as high risk, with a hazard potential that is not available. The dam has not been inspected recently, and its condition assessment is not rated. While it does not fall under federal jurisdiction, the dam is regulated by the state of Texas and has undergone state permitting and inspection. With its strategic location and significant contribution to water management in the region, Earnest L Johnson Dam remains a vital infrastructure for sustaining agricultural activities and supporting the local ecosystem.
For water resource and climate enthusiasts, Earnest L Johnson Dam serves as a fascinating example of how private ownership can play a crucial role in water management and irrigation. The dam's design and construction reflect the engineering ingenuity of its time, providing valuable insights into the challenges and opportunities associated with harnessing water resources for agricultural purposes. As discussions around water security and climate resilience continue to gain importance, Earnest L Johnson Dam stands as a reminder of the essential role that dams play in supporting sustainable water use and environmental conservation.
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 Earnest L Johnson Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bayou Lanana At Nacogdoches | 9 cfs | → |
| E Fk Angelina Rv Nr Cushing | 92 cfs | → |
| Angelina Rv Nr Alto | 160 cfs | → |
| Attoyac Bayou Nr Chireno | 1,000 cfs | → |
| Mud Ck Nr Jacksonville | 13 cfs | → |
| Ayish Bayou Nr San Augustine | 100 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Earnest L Johnson Dam.
Track Earnest L Johnson 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 Earnest L Johnson Dam
Where does the data for Earnest L Johnson 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 Earnest L Johnson Dam.