This site will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device.

Nerodia sipedon (Linnaeus, 1758) - Common Watersnake

Maps

Locality Map

Locality map for Nerodia sipedon (Common Watersnake)
Locality map for Nerodia sipedon (Common Watersnake).
Map created 3 August 2022.

County Map

County map for Nerodia sipedon (Common Watersnake)
County map for Nerodia sipedon (Common Watersnake).
Map created 3 August 2022.

Historical Locality Map

Historical locality map for Nerodia sipedon (Common Watersnake)
Historical locality map for Nerodia sipedon (Common Watersnake). Black circles ( ) represent records after 1986, blue squares ( ) represent records between 1966 and 1986, orange triangles ( ) represent records prior to 1966. Note that more recent records might conceal underlying older records.
Map created 3 August 2022.

Historical County Map

Historical county map for Nerodia sipedon (Common Watersnake)
Historical county map for Nerodia sipedon (Common Watersnake). Black circles ( ) represent records after 1986, blue squares ( ) represent records between 1966 and 1986, orange triangles ( ) represent records prior to 1966. Note that only the most recent county record for each county is shown.
Map created 3 August 2022.

Ecological Drainage Locality Map

Ecological Drainage Units map for Nerodia sipedon (Common Watersnake)
Ecological Drainage Units locality map for Nerodia sipedon (Common Watersnake).
Map created 3 August 2022.

Natural Divisions Locality Map

Natural Divisions locality map for Nerodia sipedon (Common Watersnake)
Natural Divisions and Sections locality map for Nerodia sipedon (Common Watersnake).
Map created 3 August 2022.

Major Watersheds Locality Map

Major watersheds map for Nerodia sipedon (Common Watersnake)
Major Watersheds locality map for Nerodia sipedon (Common Watersnake).
Map created 3 August 2022.

Level I Ecoregion Locality Map

Level I Ecoregions map for Nerodia sipedon (Common Watersnake)
Level I Ecoregion locality map for Nerodia sipedon (Common Watersnake).
Map created 3 August 2022.

Level II Ecoregion Locality Map

Level II Ecoregions map for Nerodia sipedon (Common Watersnake)
Level II Ecoregion locality map for Nerodia sipedon (Common Watersnake).
Map created 3 August 2022.

Level III Ecoregion Locality Map

Level III Ecoregions map for Nerodia sipedon (Common Watersnake)
Level III Ecoregion locality map for Nerodia sipedon (Common Watersnake).
Map created 3 August 2022.

Level IV Ecoregion Locality Map

Level IV Ecoregions map for Nerodia sipedon (Common Watersnake)
Level IV Ecoregion locality map for Nerodia sipedon (Common Watersnake).
Map created 3 August 2022.

Native Status

Nerodia sipedon (Common Watersnake) is native to Missouri.

Collection Summary

Nerodia sipedon (Common Watersnake) has a total of 1154 valid, non-duplicated collections representing 110 counties and 533 localities. There are a total of 218 collectors and 446 collection dates for the species. This results in a total of 484 expeditions for the species, a measure of unique date / collector(s) combinations. The earliest collection year for the species in Missouri is 1897 and its most recent collection year is 2021. The earliest and latest collection dates (independent of earliest and most recent collection years) are February 11 and November 6, respectively. If you have a new record to report, read the New Records section of the FAQ.

Collection Summary by County

Collection summary for Nerodia sipedon (Common Watersnake) by county. Some values are unavailable since some records are represented solely by historical literature reports, which sometimes lack complete collecting data. Click on a county name to view more information about that county. Click on column headings to sort by that column.
County Localities Collections Collectors Dates Expeditions Earliest Year Latest Year
Adair 2 3 3 2 2 1955 1969
Andrew 1 1 1 1 1 1991 1991
Atchison 1 1 1 1 1 2017 2017
Audrain 3 3 1 3 3 2000 2021
Barry 20 58 12 18 19 1930 2020
Barton 1 2 1 1 1 1982 1982
Bates 1 1 1 1 1 1982 1982
Benton 3 3 2 3 3 1963 1982
Boone 10 17 11 10 11 1952 2020
Buchanan 1 1 1 1 1 1993 1993
Butler 5 60 3 3 5 1937 1975
Caldwell 3 3 3 3 3 1985 2017
Callaway 3 3 4 3 3 1929 2018
Camden 6 6 5 5 5 1962 1982
Cape Girardeau 6 8 7 7 7 1963 1996
Carroll 1 1 2 1 1 2006 2006
Carter 9 14 15 13 14 1930 2004
Cass 5 5 6 5 5 1964 2003
Chariton 3 4 4 3 3 1938 1999
Christian 9 10 13 9 9 1950 2019
Clark 3 3 4 3 3 1979 2011
Clay 8 9 7 8 8 1938 1967
Clinton 3 3 2 3 3 1961 1962
Cole 1 1 1 1 1 1982 1982
Cooper 2 3 4 3 3 1929 1968
Crawford 4 9 4 7 7 1899 1965
Dade 3 4 5 3 3 1936 2012
Dallas 6 8 10 7 7 1939 2018
Daviess 3 3 3 3 3 1940 2015
De Kalb 2 2 2 2 2 1962 1986
Dent 3 12 5 5 5 1909 1965
Douglas 2 2 2 2 2 1993 2016
Dunklin 3 4 6 4 4 1904 1947
Franklin 3 7 3 3 3 1933 1941
Gasconade 4 4 4 4 4 1967 2013
Gentry 2 2 2 2 2 1997 2001
Greene 19 85 12 19 20 1930 2021
Grundy 4 6 6 6 6 1964 2006
Harrison 2 2 2 2 2 1983 2012
Henry 2 5 2 2 2 1967 1982
Hickory 6 7 4 6 6 1964 2004
Holt 4 4 1 3 3 2017 2021
Howard 5 5 3 3 3 1999 1999
Howell 2 64 1 3 3 1975 1976
Iron 2 2 4 2 2 1933 1933
Jackson 27 113 6 26 26 1908 1978
Jasper 3 4 4 4 4 1906 1997
Jefferson 7 9 2 3 3 1897 1897
Johnson 13 40 13 15 18 1960 1997
Knox 3 3 3 3 3 1986 2003
Laclede 3 3 6 3 3 1972 2002
Lafayette 5 5 3 5 5 1937 1999
Lawrence 2 2 1 1 1 1982 1982
Lewis 4 6 3 5 5 1940 1996
Lincoln 3 5 2 4 4 1979 2013
Linn 2 2 2 2 2 2005 2007
Livingston 2 3 2 2 2 1940 1940
Macon 3 3 3 3 3 1996 2011
Madison 7 13 12 9 9 1931 2007
Maries 5 7 4 4 4 1909 2000
Marion 3 3 3 3 3 1947 1995
McDonald 11 27 8 9 10 1930 2001
Mercer 1 1 1 1 1 1983 1983
Miller 10 48 6 9 9 1939 2002
Mississippi 1 1 3 1 1 1996 1996
Moniteau 1 1 1 1 1
Monroe 6 7 6 6 6 1999 2020
Montgomery 2 3 3 3 3 1905 2005
Morgan 3 3 4 3 3 1966 2013
Newton 7 7 11 6 7 1935 2001
Nodaway 4 6 3 6 6 1970 2017
Oregon 8 32 12 8 8 1930 2003
Osage 2 2 2 2 2 1961 1967
Ozark 12 22 9 10 10 1902 2020
Perry 2 2 4 2 2 1994 1994
Pettis 6 6 7 6 6 1930 2013
Phelps 5 9 4 4 4 1945 2016
Pike 9 16 5 13 13 1992 2021
Platte 3 3 3 3 3 1960 2011
Polk 2 2 4 2 2 1983 2004
Pulaski 6 6 7 6 6 1929 2015
Putnam 2 2 2 2 2 2005 2021
Ralls 3 3 6 3 3 1992 2015
Randolph 4 4 2 4 4 1992 2002
Ray 3 3 4 3 3 1950 2007
Reynolds 10 21 12 10 11 1939 1964
Ripley 2 2 3 2 2 1975 2007
Saint Charles 4 5 6 5 5 1906 1990
Saint Clair 3 4 2 4 4 1938 2001
Sainte Genevieve 2 3 2 2 2 1940 2014
Saint Francois 3 3 2 3 3 1966 2007
Saint Louis 3 7 2 5 5 1906 1958
Saline 2 2 3 2 2 1966 2013
Schuyler 1 1 1 1 1 1985 1985
Scotland 1 1 1 1 1 1986 1986
Scott 3 4 2 1 1 2011 2011
Shannon 19 30 18 14 15 1940 2020
Shelby 2 2 2 2 2 1992 2010
Stoddard 4 8 6 6 7 1939 1973
Stone 16 23 16 15 16 1906 2021
Sullivan 4 4 2 4 4 2009 2015
Taney 12 13 10 10 10 1965 2018
Texas 12 13 11 11 11 1970 2020
Vernon 5 36 2 5 5 1934 1937
Warren 2 2 2 2 2 2001 2001
Washington 2 5 1 2 2 1909 1909
Wayne 12 18 14 10 12 1939 1981
Webster 5 29 5 6 6 1932 2017
Worth 1 1 1 1 1 1992 1992
Wright 3 14 4 3 3 1930 1948

Potential County Records

Potential counties for Nerodia sipedon (Common Watersnake). Counties are listed in descending order of their likelihood of having this species. Click on a county to view more information about that county. Click on column headings to sort by that column.
Likelihood County Rationale Ecoregion / Watershed
2 Bollinger Same Level IV ecoregion, within 5 miles Bluff Hills
2 Bollinger Same Level IV ecoregion, within 5 miles Eastern Ozark Border
2 Bollinger Same Level IV ecoregion, within 5 miles River Hills
2 Bollinger Same Level IV ecoregion, within 5 miles St. Francis Lowlands
2 Bollinger Same Level IV ecoregion, within 5 miles Western Lowlands Pleistocene Valley Trains
2 Cedar Same Level IV ecoregion, within 5 miles Springfield Plateau
2 New Madrid Same Level IV ecoregion, within 5 miles Northern Holocene Meander Belts
6 Pemiscot Same Level IV ecoregion, within 20 miles St. Francis Lowlands

Linnaean Classification

Kingdom:
Animalia - Animals
Phylum:
Chordata - Chordates
Subphylum:
Vertebrata - Vertebrates
Class:
Reptilia Laurenti, 1768 - Reptiles
Order:
Squamata Oppel, 1811 - Lizards and Snakes
Suborder:
Serpentes Linnaeus, 1758 - Snakes
Family:
Natricidae Bonaparte, 1838 - Harmless Live-bearing Snakes
Genus:
Nerodia Baird and Girard, 1853 - North American Watersnakes
Species:
Nerodia sipedon (Linnaeus, 1758) - Common Watersnake

Recent Taxonomic Synonyms

(none)