Geography of Iowa (English Wikipedia)

Tecklenburg, Jeff (Dec 18, 2009). "Don't take aquifer for granted". Cedar Rapids Gazette. Archived from the original on July 10, 2012. Retrieved 20 December 2009.

books.google.com

Wayne I. Anderson, Iowa's Geological Past: Three Billion Years Of Change, University Of Iowa Press, 1998, p.41 ISBN 978-0877456391

cityofkeokuk.org

Keokuk Comprehensive Plan 2018 (PDF) (Report). June 2018. Archived (PDF) from the original on February 20, 2021. Retrieved April 6, 2020.

climate-data.org

en.climate-data.org

"Climate Iowa: Temperature, climate graph, Climate table for Iowa - Climate-Data.org". en.climate-data.org. Archived from the original on April 24, 2019. Retrieved April 6, 2020.

currentresults.com

"Average Annual Snowfall Totals in Iowa – Current Results". Currentresults.com. Archived from the original on February 21, 2020. Retrieved April 6, 2020.

desmoinesregister.com

'Drink up - from the city tap.' Des Moines Register 2 July 2008, http://www.desmoinesregister.com/apps/pbcs.dll/article?AID=/20080702/OPINION03/807020346/1110^{[permanent dead link‍]} Missing on 2018-9-17.

dri.edu

wrcc.dri.edu

Average Annual Precipitation Iowa, 1961–1990 (GIF File) Archived February 13, 2010, at the Wayback Machine—Christopher Daly, Jenny Weisburg

gazetteonline.com

Love, Orlan (Dec 6, 2009). "Heavy use draining aquifer". Cedar Rapids Gazette. Archived from the original on December 9, 2009. Retrieved 20 December 2009.
Tecklenburg, Jeff (Dec 18, 2009). "Don't take aquifer for granted". Cedar Rapids Gazette. Archived from the original on July 10, 2012. Retrieved 20 December 2009.

iastate.edu

extension.iastate.edu

"Extension Store" (PDF).

icgov.org

"Housing Authority | City of Iowa City". Archived from the original on 2009-02-10. Retrieved 2008-06-26.

iowadnr.gov

IA DNR: State Parks, Geode State Park

kcci.com

Fickau, Ethan (3 September 2016). "What's the likelihood of feeling another earthquake in Iowa?". KCCI Des Moines (CBS). Retrieved 10 September 2016.

noaa.gov

srh.noaa.gov

US Thunderstorm distribution. src.noaa.gov. Retrieved February 13, 2008. Archived October 15, 2006, at the Wayback Machine

crh.noaa.gov

"Des Moines, IA". noaa.gov. Archived from the original on August 21, 2014. Retrieved February 18, 2015.

ncei.noaa.gov

"Station: Des Moines INTP AP, IA". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved June 26, 2021.

passc.net

"Manson". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 2022-10-04.

press-citizen.com

Iowa City Press Citizen, http://www.press-citizen.com/apps/pbcs.dll/article?AID=/20080709/NEWS01/807090324/1079^{[permanent dead link‍]}

rcc-acis.org

threadex.rcc-acis.org

Official records for Des Moines kept August 1878 to August 1939 at downtown and at Des Moines Int'l since September 1939. For more information, see Threadex

sciencedaily.com

https://www.sciencedaily.com/releases/2006/06/060626123721.htm, http://slothcentral.com/ Archived 2008-10-08 at the Wayback Machine

slothcentral.com

https://www.sciencedaily.com/releases/2006/06/060626123721.htm, http://slothcentral.com/ Archived 2008-10-08 at the Wayback Machine

thegazette.com

"Geological survey: Ancient meteorite crater sits below Decorah". Cedar Rapids Gazette. 5 March 2013. Retrieved 6 March 2013.

uiowa.edu

igsb.uiowa.edu

Prior: Geology of Iowa: Iowa's Earth History Shaped by Ice, Wind, Rivers, and Ancient Seas Archived 2009-04-16 at the Wayback Machine
Iowa's Manson Impact Structure Archived 2008-06-16 at the Wayback Machine
"Midcontinent Rift System In Iowa". Archived from the original on 2007-05-22. Retrieved 2008-06-09.
"Iowa Coal Geology". Archived from the original on 2008-06-15. Retrieved 2008-06-09.
"Oil, Gas, and Metallic Mineral Regulatory Information". Archived from the original on 2008-05-17. Retrieved 2008-06-09.
Prior, Jean C. (1991) Landforms of Iowa. University of Iowa Press, Iowa City. "Landforms". Archived from the original on 2009-03-02. Retrieved 2008-06-09.. See also Calvin, Samuel (1904) Outline Map of the Drift Sheets of Iowa. Iowa Publication Co., Davenport.
"Landforms". Archived from the original on 2009-03-02. Retrieved 2008-06-09.
Iowa City Water Quality Archived May 17, 2008, at the Wayback Machine
Flood of 1993 Archived June 16, 2008, at the Wayback Machine
Witzke, http://www.igsb.uiowa.edu/Browse/dinosaurs/age_of_dinosaurs_in_iowa.htm Archived 2008-05-11 at the Wayback Machine

uiowa.edu

"Archived copy". Archived from the original on 2008-05-24. Retrieved 2008-06-09.{{cite web}}: CS1 maint: archived copy as title (link)

umn.edu

geo.umn.edu

"Sioux Quartzite geology". Archived from the original on 2008-07-23. Retrieved 2008-06-20.

usatoday.com

usatoday30.usatoday.com

"2008 Iowa tornadoes deadliest since 1968". USA Today. January 2, 2009. Archived from the original on October 11, 2013. Retrieved January 2, 2009.

usatoday.com

Munson, Kyle. "Site of Iowa's coldest temp shivers with rest of state". USA TODAY. Archived from the original on February 28, 2020. Retrieved April 6, 2020.

usda.gov

ia.nrcs.usda.gov

Information About Soils | Iowa NRCS

usgs.gov

earthquake.usgs.gov

"Iowa Earthquake Information". Archived from the original on 2009-05-15. Retrieved 2017-08-28.
"Iowa". Archived from the original on 2009-01-09. Retrieved 2017-08-28.

usgs.gov

US Geological Survey. "Iowa Meteorite Crater Confirmed". Retrieved 7 March 2013.

mrdata.usgs.gov

Kucks, Robert P.; Hill, Patricia L. (2005). "Iowa magnetic and gravity maps and data". U.S. Geological Survey. Retrieved 2009-09-03.

ustravelweather.com

"Iowa Weather-Iowa Weather Forecast-Iowa Climate". ustravelweather.com. Archived from the original on January 31, 2011. Retrieved February 17, 2011.

washingtonpost.com

Vastag, Brian (18 February 2013). "Crater found in Iowa points to asteroid break-up 470 million years ago". Washington Post. Retrieved 19 February 2013.

weather-us.com

"Des Moines, Iowa, USA - Monthly weather forecast and Climate data". Weather Atlas. Retrieved July 4, 2019.

weather.com

"Average Weather for Des Moines, IA—Temperature and Precipitation, Weather.com, Retrieved Jan. 7, 2009". Weather.com. Archived from the original on December 3, 2010. Retrieved July 31, 2010.
"Monthly Averages for Davenport, Iowa". Weather.com. Archived from the original on October 8, 2008. Retrieved November 1, 2008.
"Average Weather for Des Moines, IA—Temperature and Precipitation". Weather.com. Archived from the original on October 24, 2012. Retrieved February 18, 2012.
"Daily Averages for Keokuk, IA". weather.com. Archived from the original on October 24, 2012. Retrieved February 18, 2012.
"Average Weather for Mason City, IA—Temperature and Precipitation". Weather.com. Archived from the original on October 24, 2012. Retrieved February 18, 2012.
"Average Weather for Sioux City, IA—Temperature and Precipitation". Weather.com. Archived from the original on October 24, 2012. Retrieved February 18, 2012.

weather.gov

"NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved June 26, 2021.

web.archive.org

Prior: Geology of Iowa: Iowa's Earth History Shaped by Ice, Wind, Rivers, and Ancient Seas Archived 2009-04-16 at the Wayback Machine
Iowa's Manson Impact Structure Archived 2008-06-16 at the Wayback Machine
"Midcontinent Rift System In Iowa". Archived from the original on 2007-05-22. Retrieved 2008-06-09.
"Iowa Earthquake Information". Archived from the original on 2009-05-15. Retrieved 2017-08-28.
"Iowa". Archived from the original on 2009-01-09. Retrieved 2017-08-28.
"Iowa Coal Geology". Archived from the original on 2008-06-15. Retrieved 2008-06-09.
"Oil, Gas, and Metallic Mineral Regulatory Information". Archived from the original on 2008-05-17. Retrieved 2008-06-09.
"Sioux Quartzite geology". Archived from the original on 2008-07-23. Retrieved 2008-06-20.
Prior, Jean C. (1991) Landforms of Iowa. University of Iowa Press, Iowa City. "Landforms". Archived from the original on 2009-03-02. Retrieved 2008-06-09.. See also Calvin, Samuel (1904) Outline Map of the Drift Sheets of Iowa. Iowa Publication Co., Davenport.
"Landforms". Archived from the original on 2009-03-02. Retrieved 2008-06-09.
"Climate Iowa: Temperature, climate graph, Climate table for Iowa - Climate-Data.org". en.climate-data.org. Archived from the original on April 24, 2019. Retrieved April 6, 2020.
"Average Annual Snowfall Totals in Iowa – Current Results". Currentresults.com. Archived from the original on February 21, 2020. Retrieved April 6, 2020.
US Thunderstorm distribution. src.noaa.gov. Retrieved February 13, 2008. Archived October 15, 2006, at the Wayback Machine
"Des Moines, IA". noaa.gov. Archived from the original on August 21, 2014. Retrieved February 18, 2015.
"2008 Iowa tornadoes deadliest since 1968". USA Today. January 2, 2009. Archived from the original on October 11, 2013. Retrieved January 2, 2009.
Keokuk Comprehensive Plan 2018 (PDF) (Report). June 2018. Archived (PDF) from the original on February 20, 2021. Retrieved April 6, 2020.
Munson, Kyle. "Site of Iowa's coldest temp shivers with rest of state". USA TODAY. Archived from the original on February 28, 2020. Retrieved April 6, 2020.
Average Annual Precipitation Iowa, 1961–1990 (GIF File) Archived February 13, 2010, at the Wayback Machine—Christopher Daly, Jenny Weisburg
"Average Weather for Des Moines, IA—Temperature and Precipitation, Weather.com, Retrieved Jan. 7, 2009". Weather.com. Archived from the original on December 3, 2010. Retrieved July 31, 2010.
"Iowa Weather-Iowa Weather Forecast-Iowa Climate". ustravelweather.com. Archived from the original on January 31, 2011. Retrieved February 17, 2011.
"Monthly Averages for Davenport, Iowa". Weather.com. Archived from the original on October 8, 2008. Retrieved November 1, 2008.
"Average Weather for Des Moines, IA—Temperature and Precipitation". Weather.com. Archived from the original on October 24, 2012. Retrieved February 18, 2012.
"Daily Averages for Keokuk, IA". weather.com. Archived from the original on October 24, 2012. Retrieved February 18, 2012.
"Average Weather for Mason City, IA—Temperature and Precipitation". Weather.com. Archived from the original on October 24, 2012. Retrieved February 18, 2012.
"Average Weather for Sioux City, IA—Temperature and Precipitation". Weather.com. Archived from the original on October 24, 2012. Retrieved February 18, 2012.
Iowa City Water Quality Archived May 17, 2008, at the Wayback Machine
"Housing Authority | City of Iowa City". Archived from the original on 2009-02-10. Retrieved 2008-06-26.
Love, Orlan (Dec 6, 2009). "Heavy use draining aquifer". Cedar Rapids Gazette. Archived from the original on December 9, 2009. Retrieved 20 December 2009.
Flood of 1993 Archived June 16, 2008, at the Wayback Machine
Witzke, http://www.igsb.uiowa.edu/Browse/dinosaurs/age_of_dinosaurs_in_iowa.htm Archived 2008-05-11 at the Wayback Machine
"Archived copy". Archived from the original on 2008-05-24. Retrieved 2008-06-09.{{cite web}}: CS1 maint: archived copy as title (link)
https://www.sciencedaily.com/releases/2006/06/060626123721.htm, http://slothcentral.com/ Archived 2008-10-08 at the Wayback Machine