What is the difference between a sinkhole and a pothole?
A sinkhole is a closed natural depression in the ground surface caused by removal of material below the ground and either collapse or gradual subsidence of the surface into the resulting void.
A pothole is usually a fairly small feature caused by failure of paving materials, usually associated with roads, parking lots, and airports. In the colder parts of the country, potholes become more abundant in late winter and spring because of freeze-thaw damage to pavements. But beware of international terminology: British cavers refer to caves as potholes and call cave exploring "potholing".
There’s also another kind of pothole. Parts of Canada and the central United States are covered by a region of wetlands called prairie potholes that were formed as Pleistocene Epoch glaciers receded around 12,000 years ago. The wetlands formed where water accumulated in small depressions in a landscape that is underlain by low-permeability glacial till. Prairie potholes are NOT collapse features.
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Coal-tar-based pavement sealcoat—Potential concerns for human health and aquatic life
Introduction Sealcoat is the black, viscous liquid sprayed or painted on many asphalt parking lots, driveways, and playgrounds to protect and enhance the appearance of the underlying asphalt. Studies by the U.S. Geological Survey (USGS), academic institutions, and State and local agencies have identified coal-tar-based pavement sealcoat as a major...
Mahler, Barbara; Woodside, Michael D.; Van Metre, Peter C.
Karst in the United States: A digital map compilation and database
This report describes new digital maps delineating areas of the United States, including Puerto Rico and the U.S. Virgin Islands, having karst or the potential for development of karst and pseudokarst. These maps show areas underlain by soluble rocks and also by volcanic rocks, sedimentary deposits, and permafrost that have potential for karst or...
Weary, David J.; Doctor, Daniel H.
Land-use change, economics, and rural well-being in the Prairie Pothole Region of the United States
This fact sheet highlights findings included in a comprehensive new report (see USGS Professional Paper 1800) which investigated land-use change, economic characteristics, and rural community well-being in the Prairie Pothole Region of the United States. Once one of the largest grassland-wetlands ecosystems on earth, the North American prairie has...
Gascoigne, William R.; Hoag, Dana L.K.; Johnson, Rex R.; Koontz, Lynne M.; Thomas, Catherine Cullinane
Sinkholes
Sinkholes are a common feature in Missouri where limestone and dolomite outcrop. Though often considered a benign nuisance, sudden, catastrophic collapses can destroy property, delay construction projects, and contaminate ground water resources.
Kaufmann, James E.
Land subsidence in the United States
No abstract available.
Galloway, Devin L.; Jones, David R.; Ingebritsen, S.E.
Exploring caves: teaching packet for grades K-3
"Exploring Caves" is an interdisciplinary set of materials on caves for grades K-3. Caves entail at least five scientific disciplines: earth science, hydrology, mapping, biology, and anthropology. Each of these disciplines involves a unique content area as well as the development of particular intellectual skills. This unit aims at helping...
Karst topography; computer animations and paper model
Alpha, T.R.; Galloway, John P.; Tinsley, J. C.
Development of sinkholes resulting from man's activities in the Eastern United States
Development of induced sinkholes in carbonate terranes in the Eastern United States has resulted in costly damage and water pollution. Previously, detailed investigations of sinkholes were limited to Alabama and Missouri, with the most comprehensive being in Alabama. An investigation of the remainder of the area was made in 1981 to regionalize...
Newton, John G.
Formation of solution-subsidence sinkholes above salt beds
Ege, John R.
Generalized hydrology of prairie potholes on the Coteau du Missouri, North Dakota
This report presents all the information, obtained during the investigation, that lends itself to generalization. It describes conditions on that part of the Coteau du Missouri where there is little integration of drainage systems. The surface of the glacial drift in this region is dotted with shallow depressions known as prairie potholes that...
Eisenlohr, William Stewart; Sloan, Charles E.
EarthWord–Karst
Although it sounds like a Batman punch, this EarthWord is closer to the Bat than you’d think...
Disappearing Ducks? North America’s Prairie Potholes Vulnerable to Warming Climates
The loss of wetlands in the prairie pothole region of central North America due to a warmer and drier climate will negatively affect millions of waterfowl that depend on the region for food, shelter and raising young, according to research published today in the journal BioScience.
Karst, Critters, and Climate Change
This webinar was conducted as part of the Climate Change Science and Management Webinar Series, co-hosted by the USGS National Climate Change and Wildlife Science Center and the FWS National Conservation Training Center. Webinar Description: One-half of North American imperiled species live in subterranean habitats, which largely are associated with karst (a type of
An Unseen World Beneath Our Feet - Caves, Sinkholes and Springs
Randall Orndorff, Director of the Eastern Geology and Paleoclimate Science Center, discusses how Karst affects daily life. Beneath a quarter of the United States are rock types that can dissolve to form caves, sinkholes and other features. Nearly every state has rock layers of limestone, gypsum, and other soluble rocks we call ‘karst’. Karst is important for many reasons.
Karst features, Buffalo National River
Examples of karst features within the Buffalo National River Park. Karst is a type of topography that is formed over limestone, dolomite, or gypsum by dissolving or solution, and that is characterized by closed depressions or sinkholes, caves, and underground drainage (American Geological Institute Dictionary of Geologic Terms).
Sinkholes in West-central Florida, Freeze Event of 2010
More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The sinkholes destroyed homes, roads and sections of cultivated areas.
Sinkholes in West-central Florida, Freeze Event of 2010
More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The sinkholes destroyed homes, roads and sections of cultivated areas.
Sinkholes in West-central Florida, Freeze Event of 2010
More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The sinkholes destroyed homes, roads and sections of cultivated areas.
Wetlands in the prairie pothole region of North American
Wetlands in the prairie pothole region of North American, while often appearing as being isolated from each other, are interconnect to each through a variety of ways including temporary surface-water flows, long-term groundwater flows, and biotic movements.
What's Up With Sinkholes?
A huge sinkhole in Texas begs a few questions about this fascinating and sometimes hazardous phenomenon, so we sit down with USGS geologist Randy Orndorff to learn more.
Various Karst Features Along Peace River, Fl
Observing the small amount of flow going into Dover Sink.
Various Karst Features Along Peace River, Fl
Monitoring levels at Gator Sink.
Various Karst Features Along Peace River, Fl
Root filled cavities near Catacombs No. 8 showing underground flow.
Various Karst Features Along Peace River, Fl
Crevasses Sink spans approximately 25 ft across the river bed.