Editing Jo Daviess County, Illinois (section)

==Geography==
[[File:Charles Mound, Illinois.JPG|thumb|200px|Charles Mound, the highest natural point in Illinois at {{convert|1,235|ft|m|abbr=on}}, is located near Scales Mound in Jo Daviess County.]]

According to the [[U.S. Census Bureau]], the county has a total area of {{convert|619|sqmi}}, of which {{convert|601|sqmi}} is land and {{convert|18|sqmi}} (2.9%) is water.<ref name="census-density"/>

===Climate and weather===
{{climate chart
|[[Galena, Illinois]]
|9|27|1.14
|14|33|1.26
|25|45|2.28
|36|59|3.31
|47|71|3.73
|57|81|4.58
|62|84|3.34
|60|82|4.38
|51|74|3.62
|39|62|2.51
|27|45|2.58
|16|32|1.62
|float=right
|units=imperial
|clear=both
|source=The Weather Channel<ref name="weather">{{cite web
  |url=http://www.weather.com/weather/wxclimatology/monthly/graph/USIL0438
  |title=Monthly Averages for Galena, Illinois
  |access-date=January 27, 2011
  |publisher=The Weather Channel
}}</ref>}}
In recent years, average temperatures in the county seat of Galena have ranged from a low of {{convert|9|°F}} in January to a high of {{convert|84|°F}} in July, although a record low of {{convert|-35|°F}} was recorded in February 1996 and a record high of {{convert|103|°F}} was recorded in August 1988. Average monthly precipitation ranged from {{convert|1.14|in}} in January to {{convert|4.58|in}} in June.<ref name="weather"/>

===Major highways===
In Illinois, US 20 is designated the General Ulysses S. Grant Highway (often abbreviated the U.S. Grant Memorial Highway) and is the longest route in the United States.<ref>[https://www.fhwa.dot.gov/infrastructure/longest.cfm Ask the Rambler: What Is The Longest Road in the United States?] Source published: June 27, 2017; accessed: July 20, 2022.</ref> In eastern Jo Daviess County US 20 is one of the few areas that remain two-lane across the entire stretch of US 20. The road between Dubuque and Stockton was once known as the most dangerous stretch of road because of the hills and curves flanked by cliffs and valleys. Travelers were greeted with signs reminding them to drive carefully as they entered this stretch of road.
* [[Image:US 20.svg|20px]] [[U.S. Route 20]]
* [[Image:Illinois 35.svg|20px]] [[Illinois Route 35]]
* [[Image:Illinois 78.svg|20px]] [[Illinois Route 78]]
* [[Image:Illinois 84.svg|20px]] [[Illinois Route 84]]

===Adjacent counties===
{{div col}}
* [[Lafayette County, Wisconsin|Lafayette County]], [[Wisconsin]] - north
* [[Stephenson County, Illinois|Stephenson County]] - east
* [[Carroll County, Illinois|Carroll County]] - south
* [[Jackson County, Iowa|Jackson County]], [[Iowa]] - southwest
* [[Dubuque County, Iowa|Dubuque County]], [[Iowa]] - west
* [[Grant County, Wisconsin|Grant County]], [[Wisconsin]] - northwest
{{div col end}}

===National protected area===
* [[Upper Mississippi River National Wildlife and Fish Refuge]] (part)

===State protected area===
* [[Apple River Canyon State Park]]

===Locally protected area===
Several areas are protected by the [[charitable organization]] [[Jo Daviess Conservation Foundation]]:<ref name="JDCF">{{cite web |title=Jo Daviess Conservation Foundation |url=http://jdcf.org/ |website=Jo Daviess Conservation Foundation |access-date=January 22, 2019}}</ref>
* [[Buehler Preserve]]
* [[Casper Bluff Land & Water Reserve]]
* [[Horseshoe Mound]]
* [[Schurmeier Teaching Forest]]
* [[Valley of Eden Bird Sanctuary]]
* [[Wapello Land & Water Reserve]]