Lock E-18 Dam Herkimer dam
Lock E-18 Dam Herkimer
Lock E-18 Dam in Herkimer, New York, serves as a critical flood risk reduction structure along the Erie Canal and Mohawk River. Built in 1915, this state-regulated dam stands at a height of 6 feet and has a storage capacity of 2200 acre-feet. With a controlled spillway width of 350 feet, the dam plays a crucial role in mitigating the risk of flooding in the region.
Managed by the New York State Department of Environmental Conservation, Lock E-18 Dam is classified as a significant hazard potential structure with a very high risk assessment rating. Despite not being conditionally rated, the dam undergoes inspection every four years to ensure its structural integrity and effectiveness in flood control. Situated in Herkimer County, this dam is a key component in the state's flood risk reduction and navigation efforts along the Mohawk River.
The presence of Lock E-18 Dam highlights the state's commitment to managing water resources and protecting communities from the impacts of extreme weather events. Its strategic location and design make it a vital asset in safeguarding the surrounding areas from potential flooding, showcasing the importance of robust infrastructure in addressing climate-related 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 Lock E-18 Dam Herkimer -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Steele Cr At Ilion Ny | 26 cfs | → |
| West Canada Creek At Kast Bridge Ny | 1,290 cfs | → |
| Mohawk River Near Little Falls Ny | 2,010 cfs | → |
| East Canada Creek At East Creek Ny | 29 cfs | → |
| Otsquago Creek At Fort Plain Ny | 10 cfs | → |
| Canajoharie Creek Nr Canajoharie Ny | 8 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lock E-18 Dam Herkimer.
Boat launches
- South Washington Street Herkimer
- Mohawk River
- Chittning Pond
- Public Boat Launch
- Delta Lake State Park Town Of Western
Campgrounds
Track Lock E-18 Dam Herkimer 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 Lock E-18 Dam Herkimer
Where does the data for Lock E-18 Dam Herkimer 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 Lock E-18 Dam Herkimer.