Subiaco Dam (Upper) dam
Subiaco Dam (Upper)
Subiaco Dam (Upper) in Arkansas, completed in 1948, serves as a crucial water supply source in the area. This rockfill dam stands at a height of 27 feet, with a maximum storage capacity of 37 acre-feet. Situated on the East Fork Hegwood Creek, the dam has a drainage area of 0.2 square miles and a surface area of 5 acres.
Despite being privately owned, Subiaco Dam (Upper) is not regulated by the state and has not been inspected or enforced by any governmental agency. The dam's significant hazard potential and lack of condition assessment raise concerns for potential risks. However, the dam has not been rated for its condition and emergency preparedness measures such as an Emergency Action Plan (EAP) are not documented.
Water resource and climate enthusiasts may take interest in the historical and structural aspects of Subiaco Dam (Upper), as well as its role in providing water supply to the surrounding area. The dam's location in Logan, Arkansas, and its relationship with the East Fork Hegwood Creek make it a notable feature in the local landscape. Despite its age and lack of recent inspections, the dam's operational capacity and potential risks highlight the importance of ongoing maintenance and monitoring for water infrastructure in the region.
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 Subiaco Dam (Upper) -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Petit Jean River Near Booneville | 59 cfs | → |
| Dutch Creek At Waltreak | · | → |
| Petit Jean River At Danville | 739 cfs | → |
| Fourche Lafave River Near Gravelly | 89 cfs | → |
| Big Piney Creek At Highway 164 Near Dover | 251 cfs | → |
| Mulberry River Near Mulberry. Ar | 329 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Subiaco Dam (Upper).
Boat launches
- Cove Lake Bathhouse Road Logan County
- Cane Creek Recreation Road 2199, Logan County
- County Road 539 Yell County
- Spadra Park Boat Ramp
- Logan County
- Aux Arcade Park Road Ozark
Campgrounds
- Cove Lake Complex
- Cove Lake Recreation Area
- Cameron Bluff
- Mount Magazine State Park
- Cane Creek - Lake Dardanelle
- Waveland - Blue Mountain Lake
Fishing spots
Paddle runs
- North Fork Illinois Bayou To Headwaters Below Pedestal Rock
- Highway 298 Bridge Near Sims, Ar To Slackwater Of Lake Ouachita
- Headwaters Sec 2, T1n, R20w To Sec 7, T1n, R19w
- Headwaters Sec 2, T2n, R18w To Forest Road 132c
- Nf Boundary At Pine Ridge, Ar To Highway 298 Bridge Near Sims, Ar
- Forest Road 132c To Forest Raod 179
Track Subiaco Dam (Upper) 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 Subiaco Dam (Upper)
Where does the data for Subiaco Dam (Upper) 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 Subiaco Dam (Upper).