The Euclid Tree is a giant sequoia located in the Mountain Home Grove, one of several sequoia groves found in the southern Sierra Nevada of California. It is the 17th largest giant sequoia in the world, and could be considered the 16th largest depending on how badly Ishi Giant atrophied during the Rough Fire in 2015.
The Euclid Tree was named and measured in 1989 by "big tree hunter" Wendell Flint, with the help of Bob Walker. Flint later determined that it was by volume the 17th largest tree in the world. However, the number two tree, the Washington Tree, lost its ranking in 2003 due to damage from a lightning strike, and the Euclid Tree is now considered the 16th largest.
The dimensions of the Euclid Tree as measured by Flint and Walker are shown below. The calculated volume ignores burns.
| Metres | Feet | ||
|---|---|---|---|
| Height above base | 83.1 | 272.7 | |
| Circumference at ground | 25.4 | 83.4 | |
| Diameter 5 ft (1.5 m) above ground | 6.2 | 20.3 | |
| Diameter 60 ft (18.3 m) above ground | 4.6 | 15.2 | |
| Diameter 120 ft (36.6 m) above ground | 4.3 | 14.2 | |
| Diameter 180 ft (54.9 m) above ground | 3.6 | 11.9 | |
| Estimated volume (m³.ft³) | 1,023 | 36,122 |