Arrowhead Lake Dam No. 1 dam
Arrowhead Lake Dam No. 1
Arrowhead Lake Dam No. 1, located in Mahoning County, Ohio, was completed in 1952 and serves as a recreational hub for water enthusiasts in the area. Managed by the USDA NRCS, this earth dam stands at a height of 30 feet and stretches 360 feet in length. With a storage capacity of 472 acre-feet and a normal storage level of 251.6 acre-feet, the dam provides ample opportunities for boating, fishing, and other water activities on the 35.1-acre surface area of Arrowhead Lake.
Despite being classified as having a significant hazard potential, Arrowhead Lake Dam No. 1 is currently in fair condition as of the last inspection in April 2016. The dam is regulated and permitted by the Department of Natural Resources in Ohio, with regular inspections and enforcement measures in place to ensure its safety and integrity. With a moderate risk assessment score of 3, the dam is considered to be at a manageable level of risk, although emergency action plans and inundation maps have not been prepared to date.
Situated along a tributary to Mill Creek, Arrowhead Lake Dam No. 1 not only provides recreational opportunities but also plays a crucial role in managing water resources in the region. As a private structure owned by individuals, the dam stands as a testament to the collaboration between private owners and state agencies in safeguarding water resources and ensuring the safety of communities downstream.
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 Arrowhead Lake Dam No. 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mahoning River At Lowellville Oh | 1,770 cfs | → |
| Mahoning River Below West Ave At Youngstown Oh | 1,630 cfs | → |
| Little Beaver Creek Near East Liverpool Oh | 452 cfs | → |
| Beaver River At Wampum | 3,260 cfs | → |
| Mahoning River Bl Berlin Dam Nr Berlin Center Oh | 507 cfs | → |
| Mahoning River At Pricetown Oh | 626 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Arrowhead Lake Dam No. 1.
Boat launches
- Bessemer Lake
- Bevington Boat Access
- Berlin Lake Boat Ramp
- Lake Milton State Park - Robinson Point Ramp
- Pa 208;Pa 551 Pulaski
- Lake Milton State Park Ramp
Campgrounds
- Guilford Lake State Park
- Beaver Creek State Park
- Mill Creek - Berlin Reservoir
- Harts Content Campground
- Tomlinson Run State Park
- West Branch State Park
Paddle runs
Track Arrowhead Lake 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 Arrowhead Lake Dam No. 1
Where does the data for Arrowhead Lake 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 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 Arrowhead Lake Dam No. 1.