Mcnary Lock And Dam - Richland Levee 4a dam
Mcnary Lock And Dam - Richland Levee 4a
Mcnary Lock and Dam, located on the Columbia River in Oregon, serves as a crucial flood risk reduction structure with a primary purpose of mitigating potential flooding in the area. Built in 1952 by the US Army Corps of Engineers, this earth dam stands 30 feet high and is one of 12 associated structures in the vicinity. The dam does not eliminate all flood risks, but rather manages water levels through controlled releases to prevent overwhelming the structure.
USACE actively monitors and manages the risks associated with the dam by prioritizing maintenance activities, engaging with emergency managers, and updating emergency action plans regularly. The agency works closely with local authorities to ensure the community is prepared for any potential dam-related emergencies, emphasizing the importance of public awareness and readiness. Despite its high hazard potential, Mcnary Lock and Dam remains a critical resource for flood protection in the region, with ongoing efforts to enhance risk management practices and ensure the dam's structural integrity.
As water resource and climate enthusiasts, understanding the intricate balance of managing flood risks at Mcnary Lock and Dam underscores the importance of proactive measures to protect communities and infrastructure from potential water-related disasters. The US Army Corps of Engineers' diligent efforts to monitor, maintain, and communicate with stakeholders highlight the commitment to safeguarding the area from flood threats and ensuring the long-term functionality of this essential earth dam structure on the Columbia River.
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 Mcnary Lock And Dam - Richland Levee 4a -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Yakima River At Kiona | 1,120 cfs | → |
| Umatilla River Near Umatilla | 210 cfs | → |
| Walla Walla River Near Touchet | 210 cfs | → |
| Yakima River At Mabton | 4,700 cfs | → |
| Columbia River Below Priest Rapids Dam | 158,000 cfs | → |
| Granger Drain At Granger | 43 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mcnary Lock And Dam - Richland Levee 4a.
Boat launches
- Columbia Park Trail 1455, Richland
- Sacajawea Heritage Trail Tri-Cities
- Columbia Point Marina Park
- Chamna Trail Tri-Cities
- Riverfront Trail, Richland
- Road 54 605, Pasco
Track Mcnary Lock And Dam - Richland Levee 4a 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 Mcnary Lock And Dam - Richland Levee 4a
Where does the data for Mcnary Lock And Dam - Richland Levee 4a 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 Mcnary Lock And Dam - Richland Levee 4a.