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Audrain County, Missouri

Maps

Landmark Map

Landmark locality map for Audrain County, Missouri
Landmark locality map for Audrain County, Missouri
Map created 15 April 2026.

Interstate HighwayRailroadUS Army Corps of Engineers
US HighwayDepartment of ConservationUS Fish and Wildlife Service
State HighwayDepartment of Natural ResourcesNational Park Service
County HighwayUS Forest ServiceUS Department of Defense

Locator Map

Locator map for Audrain County, Missouri
Locator map for Audrain County, Missouri
Map created 15 April 2026.

Natural Divisions Locality Map

Natural divisions and sections locality map for Audrain County, Missouri
Natural Divisions locality map for Audrain County, Missouri
Map created 15 April 2026.

Ecological Drainage Unit Locality Map

Ecological drainage unit locality map for Audrain County, Missouri
Ecological Drainage Units locality map for Audrain County, Missouri
Map created 15 April 2026.

Major Watersheds Locality Map

Major watersheds locality map for Audrain County, Missouri
Major Watersheds locality map for Audrain County, Missouri
Map created 15 April 2026.

Major Rivers Locality Map

Major rivers locality map for Audrain County, Missouri
Major Rivers locality map for Audrain County, Missouri
Map created 15 April 2026.

Level I Ecoregion Locality Map

Level I Ecoregion locality map for Audrain County, Missouri
Level I Ecoregion locality map for Audrain County, Missouri
Map created 15 April 2026.

Level II Ecoregion Locality Map

Level II Ecoregion locality map for Audrain County, Missouri
Level II Ecoregion locality map for Audrain County, Missouri
Map created 15 April 2026.

Level III Ecoregion Locality Map

Level III Ecoregion locality map for Audrain County, Missouri
Level III Ecoregion locality map for Audrain County, Missouri
Map created 15 April 2026.

Level IV Ecoregion Locality Map

Level IV Ecoregion locality map for Audrain County, Missouri
Level IV Ecoregion locality map for Audrain County, Missouri
Map created 15 April 2026.

Presettlement Prairie Locality Map

Presettlement prairie locality map for Audrain County, Missouri
Presettlement Prairie locality map for Audrain County, Missouri
Map created 15 April 2026.

Historical Vegetation Map

Historical vegetation map for Audrain County, Missouri
Historical Vegetation map for Audrain County, Missouri
Map created 15 April 2026.

WaterPrairieBarrens / Scrub
ForestWoodlandOpen Woodland

Geology Locality Map

Geology locality map for Audrain County, Missouri
Geology locality map for Audrain County, Missouri
Map created 15 April 2026.

AlluviumSandstoneDolomiteLimestone
ClaySandstone / LimestoneDolomite / LimestoneLimestone / Sandstone
IgneousSandstone / DolomiteDolomite / ShaleLimestone / Shale
Limestone / Sandstone / Shale

Species List

Salamanders (Caudata)

Frogs (Anura)

Lizards (Squamata, "Lizards")

Snakes (Squamata, "Snakes")

Turtles (Testudines)

Collection Summary

Audrain County has a total of 92 valid, non-duplicated collections representing 31 species and 69 localities. There are a total of 25 collectors and 53 collection dates for the county. This results in a total of 54 expeditions for the county, a measure of unique date / collector(s) combinations. The county's earliest collection year is 1938 and its most recent collection year is 2024. The earliest and latest collection dates (independent of earliest and most recent collection years) are February 19 and October 10, respectively. If you have a new record to report for Audrain County, read the New Records section of the FAQ.

Collection Summary by Species

Collection summary for Audrain County by species. Some values are unavailable since some records are represented solely by historical literature reports, which sometimes lack complete collecting data. Click on a species or common name to view more information about that species. Click on column headings to sort by that column.
Species Common Name Localities Collections Collectors Dates Expeditions Earliest Year Latest Year
Acris blanchardi Blanchard's Cricket Frog 2 3 2 2 2 1992 2000
Ambystoma texanum Small-mouthed Salamander 1 2 2 1 1 1997 1997
Anaxyrus americanus American Toad 2 2 2 2 2 1997 2020
Anaxyrus fowleri Fowler's Toad 1 1 1 1 1 2000 2000
Apalone spinifera Northern Spiny Softshell 2 2 1 2 2 2000 2024
Chelydra serpentina North American Snapping Turtle 7 8 8 7 7 1995 2015
Chrysemys picta Western Painted Turtle 7 7 6 7 7 1999 2021
Coluber constrictor North American Racer 2 2 2 2 2 1939 1999
Dryophytes versicolor Gray Treefrog 1 1 1 1 1 2013 2013
Graptemys geographica Northern Map Turtle 2 3 1 2 2 2008 2023
Lampropeltis calligaster Prairie Kingsnake 5 5 2 5 5 2000 2023
Lithobates blairi Plains Leopard Frog 1 1 2 1 1 2000 2000
Lithobates catesbeianus North American Bullfrog 5 6 4 5 5 1941 2010
Lithobates clamitans North American Green Frog 3 4 3 3 3 1999 2020
Lithobates palustris Pickerel Frog 2 2 4 2 2 2006 2020
Lithobates sphenocephalus Coastal Plains Leopard Frog 3 7 4 2 2 1950 2020
Nerodia sipedon Common Watersnake 3 3 1 3 3 2000 2021
Opheodrys vernalis Smooth Greensnake 1 4 2 2 2 1960 1960
Ophisaurus attenuatus Western Slender Glass Lizard 1 1 1 1 1 2002 2002
Pantherophis obsoletus Western Ratsnake 3 3 2 3 3 1939 2000
Plestiodon fasciatus Common Five-lined Skink 2 3 2 3 3 2021 2021
Pseudacris crucifer Spring Peeper 1 1 1 1 1 2013 2013
Pseudacris maculata Boreal Chorus Frog 2 2 2 2 2 1997 2020
Scincella lateralis Little Brown Skink 1 1 1 1 1 1999 1999
Sistrurus tergeminus Prairie Massasauga 1 1 1 1 1 2009 2009
Storeria dekayi DeKay's Brownsnake 2 3 3 2 3 1999 1999
Storeria occipitomaculata Red-bellied Snake 2 2 1 2 2 1999 1999
Terrapene ornata Ornate Box Turtle 2 2 2 2 2 1938 2000
Terrapene triunguis Three-toed Box Turtle 2 2 1 1 1 2002 2002
Thamnophis proximus Orange-striped Ribbonsnake 1 1 1 1 1 1999 1999
Thamnophis sirtalis Common Gartersnake 6 7 2 6 6 1997 2013

Potential Species Records

Potential species for Audrain County. Species are listed in descending order of their likelihood of occurrence within the county. Click on a species or common name to view more information about that species. Click on column headings to sort by that column.
Likelihood Species Common Name Rationale Ecoregion / Watershed
2 Agkistrodon contortrix Eastern Copperhead Same Level IV ecoregion, within 5 miles River Hills
2 Ambystoma maculatum Spotted Salamander Same Level IV ecoregion, within 5 miles Claypan Prairie
2 Crotalus horridus Timber Rattlesnake Same Level IV ecoregion, within 5 miles Claypan Prairie
2 Diadophis punctatus Ring-necked Snake Same Level IV ecoregion, within 5 miles River Hills
2 Lampropeltis triangulum Eastern Milksnake Same Level IV ecoregion, within 5 miles River Hills
2 Lampropeltis triangulum Eastern Milksnake Same Level IV ecoregion, within 5 miles Claypan Prairie
2 Lithobates areolatus Northern Crawfish Frog Same Level IV ecoregion, within 5 miles Claypan Prairie
2 Notophthalmus viridescens Central Newt Same Level IV ecoregion, within 5 miles River Hills
2 Opheodrys aestivus Northern Rough Greensnake Same Level IV ecoregion, within 5 miles Claypan Prairie
2 Trachemys scripta Red-eared Slider Same Level IV ecoregion, within 5 miles Claypan Prairie
2 Virginia valeriae Western Smooth Earthsnake Same Level IV ecoregion, within 5 miles River Hills
4 Ambystoma opacum Marbled Salamander Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Carphophis vermis Western Wormsnake Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Eurycea longicauda Long-tailed Salamander Same Level IV ecoregion, within 10 miles River Hills
4 Graptemys pseudogeographica False Map Turtle Same watershed, within 10 miles Lower Missouri
4 Heterodon platirhinos Eastern Hog-nosed Snake Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Heterodon platirhinos Eastern Hog-nosed Snake Same Level IV ecoregion, within 10 miles River Hills
4 Lampropeltis holbrooki Speckled Kingsnake Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Pantherophis emoryi Great Plains Ratsnake Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Pituophis catenifer Bullsnake Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Plestiodon laticeps Broad-headed Skink Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Plestiodon laticeps Broad-headed Skink Same Level IV ecoregion, within 10 miles River Hills
4 Sceloporus consobrinus Prairie Lizard Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Sceloporus consobrinus Prairie Lizard Same Level IV ecoregion, within 10 miles River Hills
4 Thamnophis radix Plains Gartersnake Same Level IV ecoregion, within 10 miles Claypan Prairie
6 Ambystoma annulatum Ringed Salamander Same Level IV ecoregion, within 20 miles River Hills
6 Aspidoscelis sexlineatus Prairie Racerunner Same Level IV ecoregion, within 20 miles River Hills
6 Graptemys ouachitensis Ouachita Map Turtle Same watershed, within 20 miles Salt
6 Lithobates sylvaticus Wood Frog Same Level IV ecoregion, within 20 miles River Hills
6 Masticophis flagellum Eastern Coachwhip Same Level IV ecoregion, within 20 miles Claypan Prairie
6 Masticophis flagellum Eastern Coachwhip Same Level IV ecoregion, within 20 miles River Hills
6 Plethodon albagula Western Slimy Salamander Same Level IV ecoregion, within 20 miles River Hills
6 Tantilla gracilis Flat-headed Snake Same Level IV ecoregion, within 20 miles River Hills
7 Ambystoma tigrinum Eastern Tiger Salamander Same Level III ecoregion, within 20 miles Central Irregular Plains
8 Anaxyrus cognatus Great Plains Toad Same Level IV ecoregion, within 30 miles River Hills
8 Anaxyrus woodhousii Rocky Mountain Toad Same Level IV ecoregion, within 30 miles River Hills
8 Apalone mutica Midland Smooth Softshell Same watershed, within 30 miles Lower Missouri-Moreau
8 Clonophis kirtlandii Kirtland's Snake Same Level IV ecoregion, within 30 miles River Hills
8 Crotaphytus collaris Eastern Collared Lizard Same Level IV ecoregion, within 30 miles River Hills
8 Dryophytes chrysoscelis Cope's Gray Treefrog Same Level IV ecoregion, within 30 miles River Hills
8 Gastrophryne carolinensis Eastern Narrow-mouthed Toad Same Level IV ecoregion, within 30 miles River Hills
8 Gastrophryne olivacea Western Narrow-mouthed Toad Same Level IV ecoregion, within 30 miles River Hills
8 Hemidactylium scutatum Four-toed Salamander Same Level IV ecoregion, within 30 miles River Hills
8 Nerodia erythrogaster Yellow-bellied Watersnake Same Level IV ecoregion, within 30 miles River Hills
8 Nerodia rhombifer Northern Diamond-backed Watersnake Same Level IV ecoregion, within 30 miles River Hills
8 Pantherophis vulpinus Eastern Foxsnake Same Level IV ecoregion, within 30 miles River Hills
8 Regina grahamii Graham's Crawfish Snake Same watershed, within 30 miles Salt
8 Regina grahamii Graham's Crawfish Snake Same watershed, within 30 miles Cuivre
8 Siren nettingi Western Lesser Siren Same Level IV ecoregion, within 30 miles River Hills
8 Spea bombifrons Plains Spadefoot Same Level IV ecoregion, within 30 miles River Hills
8 Sternotherus odoratus Eastern Musk Turtle Same watershed, within 30 miles Cuivre
10 Necturus maculosus Mudpuppy Adjacent county, same watershed Lower Missouri

Checklist

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