Nerodia sipedon (Linnaeus) – Northern Watersnake
Nerodia sipedon (Linnaeus) – Northern Watersnake

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Legend
     Exact locality, based on specimen(s) or photographs examined
     Exact locality, based on literature record believed valid
     Approximate locality based on specimen(s) or photographs examined
     Approximate locality based on literature record believed valid
     County record only, based on specimens or photographs examined
     County record only, based on literature report believed valid
     Type locality
?      Questionable and/or problematic record

Taxonomy: Four subspecies of N. sipedon are currently recognized (Crother et al. 2012).  Two of these are known from Tennessee.  These include N. s. sipedon (Common Watersnake) and N. s. pleuralis (Midland Watersnake) (Conant and Collins 1998).

Distribution: In Tennessee, Nerodia sipedon occurs statewide.  According to Conant and Collins (1998), N. s. pleuralis occupies the western two-thirds the state, while N. s. sipedon occurs in northeastern Tennessee.  Their distribution map shows a north-south zone of intergradation in East Tennessee where the ranges of the two subspecies overlap.

Museum Records by Counties: Anderson—TTU 279; UMMZ 115697. Bedford—INHS 12259.  Benton—APSU 13600, 13602, 13603, 13605, 13613, 13620-13622, 13624, 13626-13631, 13634, 13636.  Bledsoe—FLMNH 63539, 63549; LSUMZ 43951.  Blount—AMNH R-69096; FLMNH 2217, 2222, 2224, 2226, 2228, 2229; GSMNP 4037, 4038, 4050, 15869; LSUMZ 41044, 41045, 42165; MCZ 57259; NLU 12037; TU 16127; UIMNH 12358; UMMZ 82783; USNM 184477, 226576, 330103; UTKVZC 686, 3790, 5543.  Bradley—FLMNH 63536, 63537.   Campbell— FLMNH 2215, 2218, 2223, 2227, 2234, 2235, 2272.  Cannon—INHS 10249.  Carrol—APSU 19602.  CarterFLMNH 63535; UMMZ 71681; UTKVZC 1433.  Cheatham—APSU 2997, 3541, 4319, 19287; USNM 85508, 85509.  Claiborne—UMMZ 100911; USNM 86795.  Clay—LSUMZ 25161.  Cocke—MCZ 170658; UMMZ 86737; USNM 103105, 306222.  Coffee—USNM 85511; UTKVZC 6757.  Cumberland—AMNH R-116954-R-116956; SIU R-4186; TTU 517.  Davidson—APSU 17899; FLMNH 21408-21414; USNM 85506, 85507, 85510.  Decatur—KU 2475-2480, 7451.  DeKalb—LSUMZ 39246; NCSM 8740; SIU R-4156, R-4184, R-4185, R-4187; TTU 823.  Dickson—APSU 2758, 2888, 3141, 3189, 4321, 4324; LSUMZ 43990.  Dyer—LSUMZ 44009.  Fayette—APSU 15937, 18577.  Fentress—LSUMZ 48431.  Franklin—FLMNH 117243; LSUMZ 43984; MCZ 60855, 60856; USNM 8830, 56643; UTKVZC 117.  Gibson—APSU 3337, 12397, 13632.  Giles—AMNH R-101358; FLMNH 117245.  Greene—AMNH R-68990.  Hamblen—FLMNH 63530.  Hamilton—UMMZ 72259, 99015; UTKVZC 4686.  Hancock—AMNH R-129522; UTKVZC 3300.  Hardeman—APSU 13734; CMNH S9048, 17268, 17269; LSUMZ 35395; UIMNH 17206-17208; UMMZ 79226.  Hardin—APSU 15841; MSU 1236; UMMZ 113403, 113404.  Henderson—APSU 13733.  Henry—APSU 2315; MSU 1220; UMMZ 53324-53326, 53529, 53533.  Hickman—INHS 10602.  Houston—APSU 2194, 2909.  Humphreys—FLMNH 117246; SIU R-4188.  Johnson—FLMNH 63540; UMMZ 71682.  Knox—FLMNH 63532, 63548; MCZ 271; USNM 1097, 226577; UTKVZC 4263, 4264, 4373.  Lake—APSU 2191; KU 144829; MSU 878, 1560; SIU R-880.  Lauderdale—APSU 12699, 15858.  Lawrence—LSUMZ 40075, 40098, 40099; UIMNH 17209-17213; UMMZ 97066.  Lincoln—FLMNH 117244; LSUMZ 43946, 43947.  Loudon—LSUMZ 38094; UMMZ 59207.  Macon—APSU 19189.  Madison—APSU 12412.  Marshall—APSU 18978.  Maury—SIU Uncataloged (1 specimen); UMMZ 66761; UTKVZC 726.  McMinn—FLMNH 2231, 2236, 2271, 63511, 63512, 63519, 63524-63526, 63528.  McNairy—FLMNH 117248.  Meigs—FLMNH 63545-63547, 117242.  Monroe—CMNH 26938; FLMNH 2220, 2225, 2230, 2232, 2233, 2238-2240, 63510, 63513, 63515-63518, 63520, 63522, 63523, 63533, 63538, 117238, 117240; INHS 10430; LSUMZ 20727; TTU 201; UTKVZC 4783.  Montgomery—APSU 1681, 1708, 1738, 2080, 2082, 2083, 2085, 2086, 2090, 2092, 2096, 2097, 2153, 2166, 2175, 2176, 2203, 2575, 2582, 2588, 2596, 2634, 2643, 2766, 2995, 3506, 4323, 4327, 5166, 5319, 5577, 6109, 6116, 6117, 14406, 18578; UIMNH 35741; UMMZ 77432; USNM  RH 73-075A.  Obion—APSU 13601, 13604, 13607, 13610, 13615, 13616, 13637-13640; KU 206545; LSUMZ 43996; SIU R-883.  Overton—TTU Uncataloged (1 specimen).  Perry—APSU 16196; USNM 246905, 246906; UTKVZC 6734, 6735.  Pickett—USNM 95864.  Polk—AMNH R-69104, R-138311-R-138313; APSU 12389; FLMNH 2214, 63514, 63527, 63531, 63543, 63544, 117241, 117247; UMMZ 92358; USNM 306223; UTKVZC 6320, 6383, 6425-6428.  Putnam—NCSM 8738, 8739, 39989; TTU 168, 173, 869; UMMZ 55719.  Rhea— FLMNH 63529, 63542; MCZ 13077, 13078; UMMZ 56365.  Roane—FLMNH 63521, 63550; SIU R-1125; TTU 280.  Rutherford—LSUMZ 39236, 39247-39249; USNM 8839.  Scott—APSU 6152; CMNH 21077; FLMNH 2216, 2221; INHS 11356.   Sevier—CMNH R-2969; GSMNP 4031, 4032, 4034, 4035, 4040-4047; INHS 6637; LSUMZ 43991; UMMZ 86738, 142272, 142273; USNM 85503, 120115, 171510; UTKVZC 4191.  Shelby—APSU 12287-12289, 12869, 12898, 13598, 13599, 13614, 13617-13619, 13625, 13633, 13635, 13689, 13699, 16746, 17020, 17328, 17334, 17422.  Smith—USNM 87323.  Stewart—APSU 215, 291, 355, 381, 404, 827, 835, 947, 3149, 3702, 3704, 3708, 3714, 4695, 4696, 4714, 4724, 4725, 4934-4937, 4939, 5055, 5165, 15940, 18119; CMNH 66723; UL 2720, 3227.  Sullivan—AMNH R-7450-R-7452, R-116957, R-116958; USNM 84021.    Sumner—APSU 4476; NCSM 23735, 23736; UMMZ 99348, 110442; USNM 1115, 131746.  Tipton—APSU 12866.  Trousdale—APSU 19186.  Unicoi—AMNH R-116959-R-116961; FLMNH 63534, 63541.  Union—USNM 87324; UTKVZC 4864.  Van Buren—APSU 15938; LSUMZ 43956.  Warren—APSU 15939; LSUMZ 43749; SIU R-4183.  Wayne—LSUMZ 43957; NLU 45255; USNM 246903, 246904.  Weakley—APSU 13606, 13608, 13642-13649, 13651, 13653, 13656, 13657, 13659-13663, 13667, 13670, 13675, 13677-13679, 13681-13687, 13725, 14610.  White—TTU Uncataloged (1 specimen).  Williamson—APSU 12973.  Wilson—AMNH R-116951-R-116953.

Literature Sources by Counties: Anderson—Gibbons and Dorcas (2004).  Bedford—Gibbons and Dorcas (2004).  Benton—Parker (1948), Gibbons and Dorcas (2004).  Bledsoe—Gibbons and Dorcas (2004).  Blount—Huheey and Stupka (1967), Gove and Burghardt (1975), Lawson (1987), Andreadis (1997), Balent and Andreadis (1998), Sievert and Andreadis (1999), Gibbons and Dorcas (2004), Burger et al. (2005), Campbell et al. (2005), Burger et al. (2007). Bradley—Gibbons and Dorcas (2004).  Campbell—Turner and Fowler (1981), Gibbons and Dorcas (2004).  Cannon—Gibbons and Dorcas (2004).  Carrol—Owen et al. (2016).  Carter—Rhoads (1895), Phillips (1969), Phillips and Richmond (1971), Gibbons and Dorcas (2004).  Cheatham—Gibbons and Dorcas (2004), Smith (2009), Hopkins (2013).  Chester—Endsley (1954).  Claiborne—Gibbons and Dorcas (2004).  Clay—Gentry (1941), Shoup et al. (1941), Gibbons and Dorcas (2004).  Cocke—Gibbons and Dorcas (2004).  Coffee—Gibbons and Dorcas (2004), Niemiller (2005).  Cumberland—Gibbons and Dorcas (2004).  Davidson—Rhoads (1895), Hopkins (1990), Gibbons and Dorcas (2004).  Decatur—Gibbons and Dorcas (2004).  DeKalb—Harris (1967), Lawson (1987), Gibbons and Dorcas (2004).  Dickson—Gibbons and Dorcas (2004).  Dyer—Gibbons and Dorcas (2004).  Fayette—Ream (2008).  Fentress—Gentry (1941), Shoup et al. (1941), Gibbons and Dorcas (2004).  Franklin—Yarrow (1882), Cope (1900), McCrady and Rodarmor (1967), Cameron and McCrady (1978), Gibbons and Dorcas (2004), Miller et al. (2005).  Gibson—Parker (1948), Gibbons and Dorcas (2004).  Giles—Gibbons and Dorcas (2004).  Greene—Rhoads (1895), Gibbons and Dorcas (2004).  Grundy—Reynolds and Niemiller (2013e).  Hamblen—Collins (1995), Gibbons and Dorcas (2004).  Hamilton—Rhoads (1895), Miller (1996), Gibbons and Dorcas (2004).  Hancock—Gibbons and Dorcas (2004).  Hardeman—Norton (1971), Norton and Harvey (1975), Gibbons and Dorcas (2004).  Hardin—Jacob (1981), Gibbons and Dorcas (2004).  Hawkins—Alsop (1975), Gibbons and Dorcas (2004).  Henry—Blanchard (1922), Gibbons and Dorcas (2004).  Hickman— Gibbons and Dorcas (2004).  Houston—Gibbons and Dorcas (2004).  Humphreys—Gibbons and Dorcas (2004).  Jackson—Gentry (1941), Shoup et al. (1941), Gibbons and Dorcas (2004).  Jefferson—McVay (2006).  Johnson—Phillips and Richmond (1971), Gibbons and Dorcas (2004).  Knox—Rhoads (1895), Wilder (1951), Taylor (1968), Gove and Burghardt (1975), Gibbons and Dorcas (2004).  Lake—Parker (1948), Endsley (1954), Hess (1966), Gibbons and Dorcas (2004).  Lauderdale—Gibbons and Dorcas (2004).  Lawrence—Lawson (1987), Gibbons and Dorcas (2004).  Lewis—Reynolds and Niemiller (2013e).  Lincoln—Gentry (1944), Schwaner and Mount (1976), Gibbons and Dorcas (2004).  Loudon—Gibbons and Dorcas (2004).  Macon—Fulbright and Wagner (2013b).  Marion—Gibbons and Dorcas (2004).  McMinn—Gibbons and Dorcas (2004).  McNairy—Gibbons and Dorcas (2004).  Meigs—Gibbons and Dorcas (2004).  Monroe—Ash (1945), Gibbons and Dorcas (2004).  Montgomery—Scott (1967), Scott and Snyder (1968), Zirkle (1993), Fitch (1998), Gibbons and Dorcas (2004).  Moore—Reynolds and Niemiller (2013e).  Morgan—Gentry (1941), Gibbons and Dorcas (2004).  Obion—Rhoads (1895),  Parker (1937a, 1948), Gibbons and Dorcas (2004).  Overton—Gentry (1941), Shoup et al. (1941), DeLotelle (1976), Gibbons and Dorcas (2004).  Perry—Gibbons and Dorcas (2004).  Pickett—Gentry (1941), Shoup et al. (1941), Gibbons and Dorcas (2004).  Polk—Ash (1945), Gibbons and Dorcas (2004), Sutton et al. (2013).  Putnam—Gibbons and Dorcas (2004).  Rhea—Dunn (1920), Gibbons and Dorcas (2004).  Roane—Rhoads (1895), Krumholz (1954), Johnson (1964), Gibbons and Dorcas (2004), Burger et al. (2005), Campbell et al. (2005), Burger et al. (2007).  Rutherford—Yarrow (1882), Cope (1900), Lawson (1987), Lamb (2001), Gibbons and Dorcas (2004), Spiess (2004), Sykes (2008), Danikas (2010), Niemiller et al. (2011).  Scott—Gibbons and Dorcas (2004).  Sevier—Bishop (1928), Necker (1934), Schwaner and Mount (1976), Matthews and Echternacht (1984), Balent and Andreadis (1998), Gibbons and Dorcas (2004), Pitts (2015b).  Shelby—Parker (1948), Hassell (1961), Eubanks and Pecor (2003), Gibbons and Dorcas (2004).  Smith—Gibbons and Dorcas (2004).  Stewart—Zirkle (1993), Rozelle (1999), Gibbons and Dorcas (2004), Davenport (2005), Davenport and Scott (2009).  Sullivan—Phillips (1969), Phillips and Richmond (1971), Gibbons and Dorcas (2004).  Sumner—Yarrow (1882), Cope (1900), Gibbons and Dorcas (2004), Gillespie and Threadgill (2009).  Tipton—Gibbons and Dorcas (2004).  Trousdale—Fulbright and Wagner (2013b).  Unicoi—Gibbons and Dorcas (2004).  Union—Gibbons and Dorcas (2004).  Warren— Gibbons and Dorcas (2004).  Washington—Phillips (1969).  Wayne—Schwaner and Mount (1976), Gibbons and Dorcas (2004).  Williamson—Gibbons and Dorcas (2004).  Wilson—Gibbons and Dorcas (2004), Niemiller et al. (2011).

Questionable and/or Erroneous Records:  None.

Conservation Status:  None.

Posted: 5 April 2011

Latest Revision: 11 August 2016


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