HomeSoil seriesConneaut
Conneaut soil series
Conneaut soils cover 35,505 mapped acres, mostly in Ohio and Pennsylvania. USDA rates shrink-swell a limit for houses without basements on 0% of that land, and a shallow water table a limit for basements on 99%.
It is the leading soil series by area in 12 of the counties and cities on this site, including Lake County, OH.
SSURGO survey versions to August 5, 2026 · series description revised 2025-04
of its land: shrink-swell limits houses without basements
of its land: a shallow water table limits basements
median highest linear extensibility (6% and up is high)
median highest clay content in the top 150 cm
USDA's description
The Conneaut series consists of very deep, poorly and somewhat poorly drained soils formed in silty glaciolacustrine sediments or loess and in the underlying low-lime till on Wisconsinan age lake plains. Saturated hydraulic conductivity is moderately low in the upper part of the subsoil and low in the lower part and in the substratum. Slope ranges from 0 to 4 percent. Mean annual precipitation is about 865 millimeters, and mean annual temperature is about 10.5 degrees C.
Source: USDA NRCS series description (OSD) for Conneaut, revised 2025-04. Read it.
Engineering properties
| Mapped area (SSURGO) | 35,505 acres |
| Shrink-swell limits houses without basements | 0.0% |
| Shallow water table limits basements | 98.6% |
| Very limited for septic absorption fields | 98.6% |
| Most common drainage class | Somewhat poorly drained |
| Most common hydrologic soil group | C/D |
| Taxonomic class | Fine-silty, mixed, active, nonacid, mesic Aeric Epiaquepts |
| Type location | Ashtabula County, Ohio |
Where Conneaut is mapped
| State | Mapped acres |
|---|---|
| Ohio | 33,057 |
| Pennsylvania | 2,448 |
Places where Conneaut leads
Counties and cities where Conneaut covers more mapped land than any other series.
| Place | Share of mapped land |
|---|---|
| Lakeline, OH | 95% |
| Timberlake, OH | 94% |
| Willowick, OH | 59% |
| Eastlake, OH | 59% |
| Geneva-on-the-Lake, OH | 44% |
| Willoughby, OH | 35% |
| Grand River, OH | 33% |
| Mentor, OH | 33% |
| Ashtabula, OH | 29% |
| Fairport Harbor, OH | 28% |
| Madison, OH | 25% |
| Lake County, OH | 13% |
Other places where Conneaut is a main soil
Counties and cities where Conneaut is among the six soil series covering the most mapped land, but not the first. Share of the place's mapped land.
Counties
Texas and Ohio cities
Sources
Shares and properties: USDA NRCS SSURGO via Soil Data Access, weighted by each component's share of its map units. Description: the USDA NRCS series description. How we count.