Alum Creek Lake

Alum Creek Lake

Infobox lake
lake_name = Alum Creek Lake
image_lake = USACE Alum Creek Dam and Lake.jpg
caption_lake = Alum Creek Dam and Lake. View is to the northwest.
image_bathymetry =
caption_bathymetry =
location = Ohio
coords = coord|40.185718|N|82.966636|W|region:US-OH_type:waterbody|display=inline,title
type =
inflow = Alum Creek
outflow = Alum Creek
catchment =
basin_countries = United States
length =
width =
area = convert|5|sqmi|km2|abbr=on
depth =
max-depth =
volume =
residence_time =
shore =
elevation =
islands =
cities =
The Alum Creek Lake reservoir was built in 1974, covers 5 sq mi (13 km²) and has a maximum capacity of 134,800 acre feet (166,000,000 m³).

Dam Construction (1970 - 1974)

Alum Creek Dam which was constructed between 1970 and 1974 is located on Alum Creek, a tributary of Big Walnut Creek, which drains into the Scioto River. The dam is a rolled earth-fill embankment convert|10000|ft|m|abbr=on in length with a maximum height of convert|93|ft|m|abbr=on The spillway is located high on the right abutment with the raceway dropping off in front of it to the stilling basin below. Control is provided by three 34 by convert|25|ft|m|abbr=on tainter gates supported by convert|8|ft|m|abbr=on wide concrete piers resting on concrete ogee sections. The ogee sections have a crest elevation of 878 and are founded at elevation 839.

Potential Dam Failure and Retrofit (1975-1978)

On April 24, 1975 during a periodic inspection of the completed dam, the Army Corps of Engineers expressed concern about the safety of the spillway monoliths. The rock underlying the dam is Ohio Black Shale which is a largely hard, massive silt shale. It is highly fractured below the base of weathering. Within this shale are several light gray, silty to clayey shale seams up to convert|1|ft|m|abbr=on thick. It may be possible that the spillway monolith and its underlying bedrock could slide forward on one of these seams, opening a gap between the monolith and the rolled earth dam leading to rapid and catastrophic erosion of the dam.


Twelve, 6-in. diameter core holes were drilled in the raceway directly in front of the ogee weirs. At least six of these cores exhibited a clayey seam about elevation 830 (nine feet below the ogee foundations). Testing of this material and deep-seated sliding analysis indicated that the dam did indeed face a safety issue.


To prevent the concrete monolith from sliding forward, it was decided to install seven cable anchors deep into the bedrock. Each anchor consisted of bundled, high strength steel cables that were concreted into the bottom of the holes. They were then hydraulically tensioned and the holes filled with grout. Achors were installed at a 45 degree angle to a depth of 813, or convert|26|ft|m below the foundation of the ogees. On March 2, 1977 the project was bid to VSL Corporation for $254,777. Drilling for the anchors began on June 7, 1977. The final loading on each anchor was 1300 kips. On September 28, 1977, one of the anchor's foundations failed and had to be re-concreted. By 1978, the project was completed.

The January, 2005 Flood

On January 16, 2005 Alum Creek Dam's reservoir reached its highest level since construction was completed in 1974, an elevation of 898.94, about convert|17|ft|m above normal level. At this level control was maintained through the discharge pipe and it was not necessary to open the three main spillway gates.

This extreme event was caused by an average of 5-8 inches of rain falling over Central Indiana and Ohio during January 4-14, 2005. This rain combined with snow melt and saturated ground to produce record breaking runoff. Other reservoirs also set pool level records, including Deer Creek, Delaware Lake, Paint Creek, Atwood Lake, Bolivar Dam, Charles Mill Lake, Dillon Lake, Dover Dam, Mohawk Dam and Wills Creek.


* [ Army Corps of Engineers Alum Creek Retrofit Case History, 1985]
* Barnes, William D., "Anchoring of Spillway Monoliths, Alum Creek Lake, Ohio", Concrete Structures Repair and Rehabilitation, Vol C-82-1, September, 1982, US Army Engineer Waterways Experiment Station, Vicksburg, MS.

External links

* [ Alum Creek Lake current level graph]
* [ Alum Creek State Park website]
* [ Alum Creek Dam Under Construction Photo #1]
* [ Alum Creek Dam Under Construction Photo #2]

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Alum Creek (Big Walnut Creek) — Alum Creek Alum Creek innerhalb des Einzugsgebiets des Scioto Rivers Daten …   Deutsch Wikipedia

  • Alum Creek — Infobox River river name = Alum Creek caption = The confluence of the Alum Creek and Big Walnut Creek. Alum Creek is in the center of the image and Big Walnut Creek is coming from the right. origin = coord|40|32|00|N|082|49|02|W|region:US OH type …   Wikipedia

  • Alum Creek — ist der Name mehrerer Orte in den Vereinigten Staaten: Alum Creek (Kanawha County, West Virginia) Alum Creek (Lincoln County, West Virginia) Alum Creek (Texas) Flüsse: Alum Creek (Copper Creek), ein Fluss im US Bundesstaat Arizona (Yavapai… …   Deutsch Wikipedia

  • Alum Branch — ist der Name mehrerer Flüsse in den Vereinigten Staaten: Alum Branch (Buffalo Creek), ein Fluss im US Bundesstaat Texas (Freestone County) Alum Branch (Grassy Creek), ein Fluss im US Bundesstaat Texas (Bastrop County) Alum Branch (Lake Fork… …   Deutsch Wikipedia

  • Alum Run — ist der Name folgender Flüsse in den Vereinigten Staaten: Alum Run (Ohio River), ein Fluss im US Bundesstaat Ohio (Monroe County) Alum Run (Little Muskingum River), ein Fluss im US Bundesstaat Ohio (Monroe County) Alum Run (Lake Carroll), ein… …   Deutsch Wikipedia

  • Lake Langdon — Infobox lake lake name = Lake Langdon image lake = Langdon Bay Shoreline Blue Heron.jpg caption lake = image bathymetry = caption bathymetry = location = Mound, Minnesota coords = coord|44|56|00|N|93|40|31|W|region:US type:waterbody… …   Wikipedia

  • Caesar Creek State Park — Location Warren / Clinton / Greene counties, Ohio, USA Nearest city Waynesville, Ohio …   Wikipedia

  • Cowan Lake State Park — For the Pennsylvania State Park, see Cowans Gap State Park. Cowan Lake State Park Ohio State Park Natural Monument (IUCN III) …   Wikipedia

  • Conneaut Creek — Coordinates: 41°58′11″N 80°32′53″W / 41.96972°N 80.54806°W / 41.96972; 80.54806 …   Wikipedia

  • Old Woman Creek National Estuarine Research Reserve — is the smallest reserve in the National Estuarine Research Reserve System. It is also the only Great Lakes type, freshwater estuary in the system. Located in Erie County, Ohio near Sandusky, the reserve features freshwater marshes, swamp forests …   Wikipedia