Editing Hamilton County, Ohio (section)

===Geographic features===
[[Image:Cincinnati oh skyline.jpg|thumb|upright=1.15|Cincinnati, Ohio viewed from the SW, across the Ohio River, in Kentucky.]]

The county lies in a region of gentle hills formed by the slopes of the Ohio River valley and its tributaries. The [[Great Miami River]], the [[Little Miami River]], and the [[Cincinnati Mill Creek|Mill Creek]] also contribute to this system of hillsides and valleys. No naturally occurring lakes exist, but three
major humanmade lakes are part of the [[Great Parks of Hamilton County]].<ref>[https://web.archive.org/web/20161230161410/http://www.hcswcd.org/uploads/1/5/4/8/15484824/makingwaves.pdf Hamilton County Water Resources]</ref> The largest lake by far is [[Winton Woods]] Lake, covering 188 surface acres, followed by Miami Whitewater Lake, covering 85 surface acres, and Sharon Lake, covering 36 surface acres.

The county boundaries include the [[List of U.S. states by elevation|lowest point in Ohio]], in [[Miami Township, Hamilton County, Ohio|Miami Township]], where the Ohio River flows out of Ohio and into [[Indiana]]. This is the upper pool elevation behind the [[Markland Dam]], {{convert|455|ft|m}} above sea level.<ref name="kva">{{Cite web
 |url          = http://www.lrl.usace.army.mil/opl/article.asp?id=106&MyCategory=1
 |title        = Markland
 |publisher    = [[United States Army Corps of Engineers]]: Louisville District
 |archive-date = December 12, 2012
|archive-url  = https://archive.today/20121212035517/http://www.lrl.usace.army.mil/opl/article.asp?id=106&MyCategory=1
 |url-status   = dead
}}</ref>

The highest land elevation in Hamilton County is the [[Rumpke Sanitary Landfill]] at {{convert|1045|ft|m}} above [[sea level]] in [[Colerain Township, Hamilton County, Ohio|Colerain Township]].