Sign inSign up free Sign inSign up free Sign inSign up freeLake depth chart
Today's read
Rating depth structure for brook trout.
Shared by DepthScout anglers. Exact spots stay private, always.
221-acre lake near T4 R17 WELS. The lake tops out around 14 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What the data behind the map says about each species, season by season:
The outline encloses 219 acres, worked by 4.2 miles of shoreline, with a single island in the mix. A middling shoreline index (2) gives it some bays to work without being a maze. The whole water is littoral — nothing here runs deeper than ~15 ft, so it's all weed-and-bait territory. Tip to tip the water measures near 1.8 mi with a 0.5-mi widest point. Somerset County claims this one. If the bite dies, Lower First St John Pd is 2 mi to the west.
Come spring, look for brook trout tight to the bank in 2 to 14 ft. Through summer count on 4 to 14 ft; the winter hold is 2 to 14 ft. If you only fish one area, make it Deep basin: a deep basin around 14 ft that scores prime in summer. Best bite is early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 14 ft | dawn & dusk | Main-lake point (1 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 4 to 14 ft | dawn & dusk | Deep basin (14 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 14 ft | midday & dawn | Main-lake point (1 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 14 ft | dawn | Deep basin (14 ft) | Small jigging spoon, Tungsten jig + plastic |
The chart marks 6 structure features on Third Saint John Pond; the deepest is Deep basin at about 14 ft.
Season dates, license requirements, and size and bag limits for Maine waters are set by the Maine IFW — and special regulations can apply to Third Saint John Pond specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Third Saint John Pond is about 14 ft (4 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target brook trout on Third Saint John Pond.
Deep basin is the top-rated area: a deep basin in about 14 ft of water that rates prime for brook trout in summer. The map above holds the full rated-spot list for every species and season.
For brook trout, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Third Saint John Pond is regulated by the Maine IFW. Check the official Maine regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lower First St John Pd 2 mi · Second St John Pond 2 mi · Upper First St John Pond 2 mi · Fourth Saint John Pond 2 mi · Russell Pond 7 mi · Foley Pond 9 mi · Lane Pond 9 mi · Seboomook Lake 9 mi · Lost Pond 9 mi · Dole Pond 13 mi · Canada Falls Lake 14 mi · Penobscot Lake 15 mi
See how Third Saint John Pond stacks up: best brook trout lakes in Maine
More water nearby: Somerset County fishing maps (76 charts). Browse all Maine fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.