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  2. List of counties in Ohio - Wikipedia

    en.wikipedia.org/wiki/List_of_counties_in_Ohio

    The average population of Ohio's counties was 133,931; Franklin County was the most populous (1,326,063) and Vinton County was the least (12,474). The average land area is 464 sq mi (1,200 km 2). The largest county by area is Ashtabula County at 702.44 sq mi (1,819.3 km 2), and its neighbor, Lake County, is the smallest at 228.21 sq mi (591.1 ...

  3. Topsoil - Wikipedia

    en.wikipedia.org/wiki/Topsoil

    Topsoil is composed of mineral particles and organic matter and usually extends to a depth of 5-10 inches (13–25 cm). Together these make a substrate capable of holding water and air which encourages biological activity. There are generally a high concentration of roots in topsoil since this is where plants obtain most of their vital nutrients.

  4. Unified Soil Classification System - Wikipedia

    en.wikipedia.org/wiki/Unified_Soil...

    The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt): If the ...

  5. Ohio county government - Wikipedia

    en.wikipedia.org/wiki/Ohio_county_government

    Ohio county government is the structure of official managerial and legal bodies of the counties of Ohio, USA. It is marked by a loose organization and a diffusion of power, the basic framework not having been changed since the nineteenth century. The Ohio Constitution allows counties to set up a charter government as many cities and villages do ...

  6. Little Miami River - Wikipedia

    en.wikipedia.org/wiki/Little_Miami_River

    The Little Miami River (Shawnee: Cakimiyamithiipi[6]) is a Class I tributary of the Ohio River that flows 111 miles (179 km) [3] through five counties in southwestern Ohio in the United States. The Little Miami joins the Ohio River east of Cincinnati. It forms parts of the borders between Hamilton and Clermont counties and between Hamilton and ...

  7. Belmont County, Ohio - Wikipedia

    en.wikipedia.org/wiki/Belmont_County,_Ohio

    Website. www.belmontcountyohio.org. Belmont County is a county in the U.S. state of Ohio. As of the 2020 United States census, the population was 66,497. [2] Its county seat is St. Clairsville, while its largest city is Martins Ferry. The county was created on September 7, 1801, and organized on November 7, 1801. [3]

  8. Butler County, Ohio - Wikipedia

    en.wikipedia.org/wiki/Butler_County,_Ohio

    Website. bcohio.gov. Butler County is a county located in the southwestern part of the U.S. state of Ohio. As of the 2020 census, the population was 390,357. [2] Its county seat and largest city is Hamilton. [3] It is named for General Richard Butler, who died in 1791 during St. Clair's Defeat. [4]

  9. USDA soil taxonomy - Wikipedia

    en.wikipedia.org/wiki/USDA_soil_taxonomy

    A taxonomy is an arrangement in a systematic manner; the USDA soil taxonomy has six levels of classification. They are, from most general to specific: order, suborder, great group, subgroup, family and series. Soil properties that can be measured quantitatively are used in this classification system – they include: depth, moisture ...