N-4 Rockland Mine dam
N-4 Rockland Mine
N-4 Rockland Mine in Polk, Florida, is a privately owned tailings dam situated along an unnamed creek in the Fort Meade area. With a significant hazard potential and a structural height of 45 feet, this earth dam has a hydraulic height of 35 feet and a NID storage capacity of 17,000 acre-feet. The dam covers a surface area of 440 acres and serves the primary purpose of storing tailings.
Despite being regulated by the state and meeting inspection, permitting, and enforcement requirements, the dam's condition assessment is currently listed as "Not Rated." However, with a normal storage capacity of 15,400 acre-feet and a maximum storage capacity of 17,000 acre-feet, the dam plays a crucial role in managing water resources in the area. The N-4 Rockland Mine dam presents an intriguing case study for water resource and climate enthusiasts interested in the intersection of mining activities, dam construction, and environmental management.
As a key component of the water infrastructure in the region, the N-4 Rockland Mine dam's risk management measures, emergency preparedness, and maintenance protocols are essential factors to monitor for ensuring the safety and sustainability of the surrounding ecosystem. With its location in a sensitive environmental area and the potential impact on the local community, the ongoing monitoring and assessment of the dam's integrity are crucial for maintaining water security and climate resilience in the face of changing environmental conditions.
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 N-4 Rockland Mine -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Peace River At Fort Meade Fl | 2 cfs | → |
| Whidden Creek Near Fort Meade Fl | 8 cfs | → |
| Peace River Near Homeland Fl | 1 cfs | → |
| Barber Branch Near Homeland Fl | 1 cfs | → |
| Sixmile Creek At Bartow Fl | 2 cfs | → |
| Peace River At Clear Springs Near Bartow Fl | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near N-4 Rockland Mine.
Boat launches
- Doc Lindsey Road 2215-2837, Fort Meade
- Highlands By The Lake Way 3184, Lakeland
- Griffin Road 676, Wauchula
- East Eagle Avenue 942, Eagle Lake
- West Eagle Avenue, Eagle Lake
- Keen Road 506, Frostproof
Campgrounds
- Alafia River State Park
- Alderman's Ford Park Campsite 4
- Alderman's Ford Park Campsite 3
- Alderman's Ford Park Campsite 1
- Alderman's Ford Park Campsite 2
- Saddle Creek County Park
Fishing spots
Paddle runs
- County Road 780 Bridge To State Road 72 Bridge
- Begins Downstream Of The State Road 72 Bridge To The Southern Boundary Of Myakka River State Park
- The Southern Boundary Of The Myakka River State Park To Ends Approximately At River Mile 23 Where Riverfront Residential Development Begins
- Approximately At River Mile 23 Where Riverfront Residential Development Begins To The Vicinity Of Snook Haven Fish Camp At Approximately River Mile 18
- Approximately River Mile 18 To A Point Just Upriver Of The Us 41 Highway Crossing
- A Point Just Upriver Of The Us 41 Highway Crossing To The Sarasota/Charlotte County Line
Track N-4 Rockland Mine 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 N-4 Rockland Mine
Where does the data for N-4 Rockland Mine 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 N-4 Rockland Mine.