Arizona: Sometime between 1995 and 1996, a C. crocodilus was collected from the Papago Park Ponds, Phoenix, Maricopa County, Arizona (M. Demlong, personal communication 1997).
California: In 1989, a common caiman was collected from west of Arvin, Kern County, California (D. Holland, personal communication 1997). At unspecified dates, two C. crocodilus were observed (one collected) from Heather Pond near Walnut Creek, in the San Francisco area, Contra Costa County (Bury and Luckenbach, 1978), and another was collected from an ornamental pool in Long Beach, Los Angeles County (St. Amant in Bury and Luckenbach, 1978).
Connecticut: In 1985, in Hartford County, a C. crocodilus was collected from the Farmington River in Windsor, and another was observed in the Connecticut River in East Hartford (H. Gruner, personal communication 1996). A common caiman was collected from a pond called "Blue Lake" in North Stonington, New London County, Connecticut in 1996 (Altimari, 1996; Crombie, 1996; H. Gruner, personal communication 1996).
Florida: L. Porras (in Wilson and Porras, 1983) first observed common caiman of various sizes in Florida in a canal extending from Maule Lake, Miami, Dade County, in the late 1950s. In 1960, C. crocodilus were observed in various canals in Miami, Dade County (Shirley in Ellis, 1980). King and Krakauer (1966) reported C. crocodilus living in "various canal systems" in South Florida and included Palm Beach County. King and Krakauer (1966) did not think these animals were reproducing. In 1974, a breeding population of common caiman was found at Homestead Air Force Base, Dade County (Carter and Douglas in Ellis, 1980). Ellis (1980) collected natural history data from individuals collected in a federal and State of Florida sanctioned extirpation program begun in 1977. Common caiman also were found in Florida City, Dade County (Ellis, 1980), and Lake Jessup, Seminole County (Hines in Ellis, 1980). In 1976 an adult C. crocodilus with young on its back was observed near Coopertown on the Tamiami Trail, Dade County (Wasilewski in Wilson and Porras, 1983) and in 1980 hatchlings were collected from the same locality (McDermott in Wilson and Porras, 1983). Populations of C. crocodilus also are known from adjacent Broward County (Grenard, 1991; Florida Museum of Natural History records). Additional C. crocodilus were liberated in Dade County in August 1992, when Hurricane Andrew destroyed their cages at an exotic animal dealership (Belleville, 1994). More recently, specimens were reported from both Everglades National Park and Big Cypress Preserve in 2007 (Florida Fish and Wildlife Conservation Commission, 2009).
Iowa: Reported from Saylorville Reservoir in 1980 (Christiansen, 2001)
Indiana: A single individual was collected from a private pond in Marion County in June 2002 (Seng and White, 2003).
Kansas: A single caiman was collected in August 2004 from Cheney Reservoir (Pearce, 2012).
Maryland: At least three specimens have been collected from Maryland. One in Seneca Creek in 2004 (ng, 2004), Glen Burnie in 2008 (Anonymous 2008), and one in Patapsco Valley State Park in 2010 (Roylance 2010).
Massachusetts: In Massachusetts, a C. crocodilus was collected from a swamp in Taunton, Bristol County, in 1989, and another from a wetland in Plainfield, Hampshire County, in 1991 (Cardoza et al., 1993).
Minnesota: In 2004, a single individual was captured in the Mississippi River in Hennepin County at Brooklyn Park (Minnesota Department of Natural Resources, 2005).
Missouri: In 2003, a C. crocodilus was collected from a pond off Sinks Road, near the town of Ferguson, St. Louis County. (Bergman, 2003)
New York: In 2001 a C. crocodilus was collected from a pond in Central Park, New York City, New York, amid much publicity (Anonymous, 2001a, b, c; DeSantis, 2001; Heaton-Jones, 2001; Stewart, 2001).
Oklahoma: Common caiman are occasionally captured from various localities (not specified) in Oklahoma (Webb, 1970).
Pennsylvania: In 1997 a C. crocodilus was collected from Peters Creek, south of Pittsburgh, Washington County, Pennsylvania (Anonymous, 1997; R. Bamrick, personal communication 1997) and from Chartiers Creek, Allegheny County, in 2011 (Santoni, 2011).
Puerto Rico: Common caiman were introduced to Puerto Rico during the early 1970s (Watlington, 1998) and are established in many areas (F. Grana, pers. comm.)
Virginia: In Virginia, individual C. crocodilus were collected from Lake Whitehurst, Norfolk in 1964, a pond in eastern Henrico County in 1978, and Four Mile Creek, Arlington, Arlington County in 1982 (Mitchell, 1994). Another C. crocodilus was collected from a lake in Lake Fairfax Park, Fairfax County, in 1972 (D'Alessandro and Ernst, 1995; Ernst et al., 1997; D. Ernst, personal communication 1997).
Washington: Several C.crocodilus have been collected in the past decade in Seattle area lakes. (Roesler, 2003)
Cuba: Caiman crocodilus were introduced to Isla de la Juventud (=Isle of Youth or Isle of Pines), Cuba, in 1959 (Schwartz and Henderson, 1985, 1991; Estrada and Ruibal, 1999).
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This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.