Merrimack River Right Bank Fdr dam
Merrimack River Right Bank Fdr
The Merrimack River Right Bank Flood Control Levee, also known as the Nashua Flood Control Levee, is a vital structure located in Nashua, New Hampshire. Constructed in 1949, this earth dam stands at 15 feet high and stretches for 3025 feet along the Merrimack River. Its primary purpose is flood risk reduction, serving as a crucial line of defense against potential flooding in the area.
Managed by the NHDES Dam Bureau, this levee is state-regulated and undergoes regular inspections to ensure its structural integrity. With a high hazard potential and fair condition assessment, the levee plays a critical role in protecting the surrounding community from flood risks. Despite its moderate risk assessment, the structure meets guidelines and is equipped with emergency protocols to effectively manage any potential risks that may arise.
The Merrimack River Right Bank Flood Control Levee stands as a testament to the importance of water resource management and climate resilience efforts. As climate change continues to impact weather patterns and increase the frequency of extreme events, structures like this levee are essential in safeguarding communities and infrastructure from the devastating effects of flooding.
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 Merrimack River Right Bank Fdr -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Beaver Brook At North Pelham | 35 cfs | → |
| Souhegan River At Merrimack | 256 cfs | → |
| Nashua River At East Pepperell | 531 cfs | → |
| Merrimack River Bl Concord River At Lowell | 11,800 cfs | → |
| Concord R Below R Meadow Brook | 311 cfs | → |
| Spicket River Near Methuen | 25 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Merrimack River Right Bank Fdr.
Boat launches
- Claveau Landing
- Greeley Ramp Road Nashua
- Musquash Pond Boat Launch
- Winchester Street Boat Launch
- Robinson Pond Boat Launch
- Flints Pond Boat Launch
Campgrounds
- Windham Town Forest Tent Platforms
- Grotonwood
- Pearl Hill Campground
- Damon Pond Campground
- Camp Evergreen
- Remote Campsite
Paddle runs
Track Merrimack River Right Bank Fdr 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 Merrimack River Right Bank Fdr
Where does the data for Merrimack River Right Bank Fdr 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 Merrimack River Right Bank Fdr.