|
Alluvium (Qa)
Topography
The alluvium forms terraces and narrow floodplains of varying width
along streams.
Hydrology
The alluvium yields almost no water to drilled wells, but small quantities
to dug wells.
Grant Lake Limestone/Fairview Formation/Calloway Creek Limestone
(Oaf)
Topography
These rocks form gently to moderately rolling uplands, except along
major streams, where there is considerable dissection that leaves steep
slopes. Thick limestone beds stand out as ledges on steep hillsides
and bluffs along streams; where present on uplands, they underlie broad,
flat valleys that may have small sinkholes and some underground drainage.
Hydrology
These rocks yield 100 to 500 gallons per day to drilled wells in broad
valleys and along streams in uplands, but almost no water to drilled
wells on hillsides or ridgetops. They yield 100 to 500 gallons per day
to wells drilled into thick limestone beds along streams in uplands,
and thick limestone beds capping hills on uplands. Thick limestone beds
yield water to small springs along valley bottoms and hillsides. Water
is hard, and in valley bottoms may contain salt or hydrogen sulfide
Garrard Siltstone (Okc)
Topography
The Garrard forms prominent ledges in steep slopes and bluffs along
large streams.
Hydrology
The Garrard yields 100 to 500 gallons per day to drilled wells in valley bottoms,
but almost no water to wells on hillsides or ridgetops and almost no
water to springs. The well-cemented siltstone and fine-grained sandstone
do not provide many openings for water. Water is hard.
Kope Formation (Ok)
Topography
The Kope forms narrow, steep-sided ridges with narrow valleys between.
Hydrology
The Kope yields 100 to 500 gallons per day to drilled wells in valley
bottoms, but almost no water to drilled wells on hillsides or ridgetops.
It does yield water to small springs. Water is hard in valley bottoms,
and may contain salt or hydrogen sulfide.
Clays Ferry Formation (Okc)
Topography
The Clays Ferry lies in broad, flat valley bottoms along the Licking
River.
Hydrology
The Clays Ferry yields 100 to 500 gallons per day to drilled wells and
also yields water to small springs. Water is hard, and may contain salt
or hydrogen sulfide. Little water is available where it is covered by
younger rocks.
Lexington Limestone (Ol)
Topography
The Lexington lies in valley bottoms along the Licking River.
Hydrology
The Lexington yields more than 500 gallons per day to wells in stream
valleys and as much as 150 gallons per minute in places. Water is hard,
and may contain salt or hydrogen sulfide.
The U.S. Geological Survey's Hydrologic
Atlas Series, published cooperatively with the Kentucky Geological
Survey, provides hydrologic information for the entire state.
Previous--Next--Back
to "Groundwater Resources in Kentucky"
|