John May Dam No 1 dam
John May Dam No 1
John May Dam No 1, located in Titus, Texas, is a privately owned Earth dam completed in 1945 for water supply purposes along the TR-TANKERSLEY CREEK. With a hydraulic height of 19 feet and a length of 625 feet, the dam has a storage capacity of 71 acre-feet and a surface area of 9.4 acres. Despite its potential for moderate risk (rated 3), the dam's condition is assessed as poor, highlighting the need for maintenance and possible improvements.
Managed by the Texas Commission on Environmental Quality (TCEQ), the dam has undergone modifications in 1996 to enhance its hydraulic functions. However, its emergency action plan (EAP) status remains unclear, raising concerns over its readiness for potential disasters. The dam's spillway, with a width of 32 feet, is currently uncontrolled, which may pose challenges in managing water discharge during heavy rainfall events.
With its historical significance and vital role in providing water supply to the surrounding area, John May Dam No 1 serves as a crucial infrastructure for water resource management in the region. As climate change continues to impact water availability and quality, ensuring the dam's structural integrity and operational efficiency is essential for safeguarding the community's water security and resilience to future challenges.
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 John May Dam No 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big Cypress Ck At Us Hwy 271 Nr Pittsburg | 5 cfs | → |
| White Oak Ck Nr Talco | 71 cfs | → |
| Big Cypress Ck Nr Pittsburg | 12 cfs | → |
| White Oak Ck At Ih 30 Nr Omaha | 145 cfs | → |
| Sulphur Rv Nr Talco | 1,010 cfs | → |
| Sulphur Rv At Ih 30 Nr Dalby Springs | 1,010 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near John May Dam No 1.
Boat launches
- Boat Ramp Road Titus County
- North Jefferson Avenue Mount Pleasant
- Titus County
- Park Road 2117 Titus County
- Franklin County
Campgrounds
- Monticello Park - Monticello Reservoir
- Titus County Park
- Lake Bob Sandlin State Park
- Twin Oaks Park - Lake Cypress Springs
- Jack Guthrie Park - Monticello Reservoir
- Walleye Park - Lake Cypress Springs
Fishing spots
Track John May Dam No 1 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 John May Dam No 1
Where does the data for John May Dam No 1 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 John May Dam No 1.