Newt Graham Lock And Dam dam
Newt Graham Lock And Dam
Newt Graham Lock and Dam, located on the Verdigris River in Oklahoma, serves as a vital infrastructure for navigation purposes. Completed in 1970 by the US Army Corps of Engineers, this concrete dam stands at 48 feet in height and spans 7367 feet in length, with a storage capacity of 23,500 acre-feet. The dam includes a controlled spillway, a navigation lock chamber, and is designed to manage a maximum discharge of 155,000 cubic feet per second.
Despite being classified as having a significant hazard potential, the risk of failure is primarily associated with potential spillway gate failures and erosion along the embankment. To manage this risk, the US Army Corps of Engineers conducts regular maintenance, inspections, and emergency exercises with local and state responders. They also update the Emergency Action Plan yearly, monitor the dam's integrity through instrumentation, and periodically dewater the navigation lock chamber for inspection and repairs. Overall, Newt Graham Lock and Dam is a crucial structure for both navigation and flood control 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 Newt Graham Lock And Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Arkansas River Near Haskell | 2,590 cfs | → |
| Haikey Creek At 101st St South At Tulsa | 13 cfs | → |
| Little Haikey Creek At 101st St South At Tulsa | 0 cfs | → |
| Verdigris River Near Claremore | 147 cfs | → |
| Bird Ck At State Highway 266 Near Catoosa | 287 cfs | → |
| Bird Creek Near Owasso | 168 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Newt Graham Lock And Dam.
Boat launches
Campgrounds
- Newt Graham Lock And Dam - Arkansas River
- Bluff Landing - Arkansas River
- Afton Landing - Chouteau Lake
- Home Base
- Blue Bill Point - Fort Gibson Lake
- Flat Rock Creek - Fort Gibson Lake
Track Newt Graham Lock And 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 Newt Graham Lock And Dam
Where does the data for Newt Graham Lock And 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 Significant 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 Newt Graham Lock And Dam.