Geography. The Mill Creek
watershed covers southwestern Carroll County and north-central Henry County,
with a sliver of Trimble County. The higher, Henry County portion of the
watershed is in the outer subregion of the Bluegrass physiographic region,
characterized by undulating terrain, moderate to rapid surface runoff, and
moderate rates of groundwater drainage. The lower, Carroll County portion of the
watershed is in the hills of the bluegrass subregion, characterized by hilly
terrain, very rapid surface runoff, and slow groundwater drainage. Parts of the
watershed lie over interbedded shales and limestones (these are 20% limestone;
water conduction is poor because of the clay content of the shale). Other areas
are underlain by interbedded limestones and shales (>20% limestone, allowing
groundwater flow where the clay content is low enough).
Waterways. Mill Creek empties into the Kentucky River east of
English. Among the creeks that feed it are Long Branch, East Fork, West Fork,
Gilgal Branch, Pryor Branch, and Lees Creek.
Land and water use. Land in the watershed is about 5% residential and
commercial; the rest of the watershed is roughly equally divided between
agricultural and rural and wooded land. No businesses or organizations hold
permits for discharges into the creeks. See tables for details.
Agency data assessment. The assessed creek segments in this watershed
include one (West Fork) that only partially supports its designated uses, based
on biological and/or water-quality data. Siltation and stream modification
contribute to the impairment of the stream. See tables for details.
Watershed rankings. The ranking formula provides a preliminary
ranking by synthesizing a broad spectrum of watershed characteristics, current
conditions, and threats. This watershed ranks in the group with the lowest need
for protection and/or restoration. This rating is for the watershed on average:
particular sites and particular waters within the watershed may vary widely. See
tables for details.
Volunteer data. No volunteer data were collected in this watershed in
Click here to view tables for this watershed, in PDF format. These
tables include land-use characteristics, designated uses, stream assessments,
public water supply and water withdrawal sites, permitted discharge sites,
gaging and sampling sites, volunteer data, and values for the 35 indicators used
in calculating watershed rankings. (You need Adobe Acrobat Reader to view the
Systems will let you download a free
[You may click the maps below to view them