This chart was compiled by Michael Iacchetta using snake-length data from the Vermont Reptile and Amphibian Atlas Database during February of 2013. Snakes were ranked in size order, and the longest 10% from each species were included in the data for the chart.
These are the lengths you should expect for mature breeding adults of these species in Vermont. The length in red is the longest, reliably documented snake of that species from Vermont. Can you document a larger one?
In the table below, the lengths in the left hand column are the lengths you should expect for mature breeding adults of these species in Vermont. The length on the right is the largest reliably-documented snake of that species from Vermont. The third numerical column represents the number of individuals found within the top 10% of records for that species. Can you document a larger one?
| Length Data for the Longest (Top 10%) Vermont Snakes | ||||
|---|---|---|---|---|
| Measured in inches from the tip of the nose to the tail (TBL) | ||||
| Species | Average Length | Longest Reported in Vermont | Sample Size | Person(s) Who Recorded Longest |
| Red-bellied Snake | 11.5 | 13 | 33 | Kiley Briggs |
| DeKay’s Brownsnake | 16 | 16.5 | 7 | Jim and Kris Andrews |
| Ring-necked Snake | 16.5 | 17 | 14 | W. Johnson, H. Robinson, Take PART |
| Smooth Greensnake | 21 | 24 | 7 | Chris and Clara Slesar & Adrie Kusserow |
| Eastern Ribbonsnake | 34.5 | 40 | 10 | Murray McHugh & Roberta Summers |
| Common Gartersnake | 28.5 | 41 | 127 | Eric Wardie |
| Eastern Milksnake | 40.5 | 43.5 | 18 | Emily Hartz & UVM Herpetology Class |
| Timber Rattlesnake | 53 | 54 | 7 | Alcott Smith & Forrest Hammond |
| Common Watersnake | 49 | 54.5 | 11 | UVM Herpetology Class |
| North American Racer | 68.5 | 70.5 | 5 | Jim Andrews |
| Eastern Ratsnake | 71.5 | 75 | 11 | VT Agency of Transportation Field Trip |
