Lake Quality in the NH Lakes Region
COLOR (Water Clarity): Clear 0-25 / Light Tea-Color 25-40 / Tea Color 40-75
PLANTS – Key code for Plants
SG Sparse growth few emergent plants,
SP Scattered small patches or shoreline growth,
CP Common plants around the shoreline, abundant AG shoreline growth with thick surface patches visible, very abundant VG ½ the surface area covered
TROPHIC CLASS is a designation of a lake or pond according to algae production, rooted plant growth, water clarity and bottom dissolved oxygen levels. It is also from a lake standpoint an indication of the age of a lake with Oligotropic being the "youngest" lake. As they get older to Meso and Eutro they get older--not really by an actual age but from the level of sedimentation that ages a lake. The more sediment the more plant growth and the shallower it gets. Bigger lakes just don't get old really.
OLIGO - Minimal Support for algal blooms or rooted plant growth
MESO - Moderate Support
EUTRO - High Support
Water level ph, phosphorus and alkalinity are available upon request.
| Body of Water | Acres | Max. Depth | Color | Trophic | Town | Plants |
| Ashuelot Pond | 299 | 23' | 30 | MESO | Washington | cp |
| Beech Pond, Lower | 154 | 49' | 10 | OLIGO | Tuftonboro | cp |
| Blaisdell Lake | 158 | 43' | 11 | OLIGO | Sutton | sg |
| Bow Lake | 1,160 | 75' | 14 | MESO | Strafford, Northwood | sg |
| Crescent Lake | 148 | 21' | 20 | OBLIGO | Wolfeboro | sg |
| Crystal Lake | 364 | 54' | 24 | OBLIGO | Enfield | sp |
| Crystal Lake | 441 | 51' | 26 | OBLIGO | Gilmanton | sg |
| Dan Hole Pond | 408 | 131' | 20 | OBLIGO | Tuftonboro | sp |
| Eastman Pond | 334 | 40' | 23 | EUTRO | Grantham | cp |
| Franklin Pierce Lake (Jackman Reservoir) |
519 | 30' | 30 | OLIGO | Hillsboro | sp |
| Gregg Lake | 195 | 36 | 12 | OLIGO | Antrim | sp |
| Goose Pond | 553 | 33' | 18 | OLIGO | Canaan | sp |
| Grafton Pond | 320 | 65' | 15 | MESO | Grafton | cp |
| Great East Lake | 1,706 | 102' | N/A | N/A | Wakefield | sp |
| Half Moon Lake | 280 | 20' | 18 | MESO | Alton, Barnstead | cp |
| Hermit Lake | 176 | 49' | 15 | MESO | Sanbornton | vg |
| Highland Lake | 210 | 47' | 20 | MESO | Andover | sp |
| Highland Lake | 711 | 29' | 30 | MESO | Washington | cp |
| Hills Pond | 137 | 42' | 30 | MESO | Alton | cp |
| Island Pond | 202 | 55' | 15 | OLIGO | Washington | sp |
| Jenness Pond | 243 | 28' | 8 | MESO | Northwood, Pittsfield | cg |
| Lake Kanasatka | 371 | 40' | 8 | OLIGO | Moultonbourogh | sp |
| Kezar Lake | 181 | 26' | 15 | MESO | Sutton | sp |
| Kolkelemook Lake | 98 | 22' | 10 | OLIGO | Springfield | sp |
| Little Sunapee Lake | 471 | 43' | 10 | MESO | New London, Springfield | sg |
| Loon Pond | 121 | 45' | 10 | MESO | Gilmanton | cp |
| Loon Lake | 111 | 29' | 17 | MESO | Plymouth | sp |
| Lovell Lake | 537 | 41' | 15 | OLIGO | Wakefield | sg |
| Manning Lake | 202 | 53' | 20 | OLIGO | Gilmanton | sg |
| Mascoma Lake | 1,114 | 65' | 25 | MESO | Enfield | sg |
| Massasecum Lake | 401 | 49' | 14 | MESO | Bradford | cg |
| Mendum's Pond | 252 | 52 | 39 | OLIGO | Nottingham | sg |
| Merrymeeting Lake | 1,111 | 135' | 0 | OLIGO | New Durham | sg |
| Mirror Lake | 377 | 43' | 25 | MESO | Tuftonboro, Wolfeboro | cg |
| Mountainview Lake | 104 | 22' | 16 | OLIGO | Sunapee | sp |
| Newfound Lake | 4,105 | 182' | 0 | OLIGO | Alexandria, Bridgewater, Bristol, Hebron |
sp |
| Northwood Lake | 686 | 24' | 24 | MESO | Northwood, Deerfield, Epsom | sp |
| Opechee Bay | 426 | 61' | 5 | OLIGO | Laconia | sp |
| Ossipee Lake | 3091 | 50' | 21 | OLIGO | Freedom, Ossipee | sg |
| Otter Pond | 184 | 24' | 12 | MESO | Sunapee | cp |
| Pine River Pond | 593 | 42' | 10 | MESO | Wakefield | sp |
| Pemigewasset Lake | 241 | 28' | 38 | MESO | Meredith, New Hampton | ag |
| Perkins Pond | 156 | 8' | 10 | OLIGO | Sunapee | sp |
| Pleasant Lake | 493 | 65' | 0 | OLIGO | Deerfield | sg |
| Rust Pond | 210 | 40' | 7 | MESO | Wolfeboro | sp |
| Sawyer Lake | 79 | 15' | 17 | OLIGO | Gilmanton | sp |
| Shellcamp Pond | 148 | 15' | 70 | MESO | Gilmanton | vg |
| Silver Lake | 216 | 19' | 9' | MESO | Belmont, Tilton | vg |
| Silver Lake | 994 | 164' | 12 | OLIGO | Madison | sg |
| Spectacle Pond | 107 | 18' | 15 | OLIGO | Enfield | cg |
| Sunapee Lake | 4,090 | 104' | 5 | OLIGO | Newbury, New London, Sunapee | sp |
| Lower Suncook Pond | 216 | 15' | 18 | MESO | Barnstead | cp |
| Upper Suncook Pond | 362 | 41' | 28 | OLIGO | Barnstead | sp |
| Sunrise Lake | 250 | man made lake | Middleton | |||
| Sunset Lake | 205 | 77' | 15 | OLIGO | Alton | sg |
| Squam Lake | 6,764 | 99' | 0 | OLIGO | Holderness, Sandwich, Center Harbor |
sg |
| Swain's Lake | 405 | 21' | 33 | MESO | Barrington | cg |
| Lake Waukewan | 912 | 70' | 13 | OLIGO | Meredith, New Hampton | sg |
| Webster Lake | 612 | 38' | 7 | OLIGO | Franklin | sp |
| Lake Wentworth | 3,017 | 82' | 11 | OLIGO | Wolfeboro | sg |
| Wickwas Lake | 328 | 35' | 22 | MESO | Meredith | vg |
| Wild Goose Pond | 98 | 21' | 20 | OLIGO | Pittsfield | cp |
| Lake Winnepocket | 226 | 66' | 7 | OLIGO | Webster | sg |
| Lake Winnipesaukee | 44,585 | 180' | 0-14 | OLIGO | Alton, Center Harbor, Gilford, Laconia, Meredith, Moultonboro, Tuftonboro, Wolfeboro |
sg |
| Lake Winnisquam | 4,264 | 150' | 7 | OLIGO | Belmont, Laconia, Meredith, Sanbornton, Tilton | sg |
| Lake Winona | 154 | 47.9' | 12 | MESO | New Hampton | sg |
One organization in NH is devoted to protecting our lakes it si called NH LAKES and is the only statewide, member-supported nonprofit organization working to keep New Hampshire’s lakes clean and healthy, now and in the future. The organization works with partners, promotes clean water policies and responsible use, and inspires the public to care for our lakes. For information, visit www.nhlakes.org, email info@nhlakes.org, or call 603.226.0299.
