What to expect at Mirror Lake
Mirror Lake sits in the town of Enfield, roughly 20 minutes north of Hanover in the Upper Valley region. The lake covers about 160 acres and reaches a maximum depth of around 90 feet, making it deep enough to hold both lake trout and smallmouth bass year-round. The water is clear and relatively cold, fed by springs and surrounded by mixed forest — conditions that keep the lake productive through summer when many shallower New Hampshire lakes warm out.
Access is straightforward: there is a public boat launch on the north shore managed by the town of Enfield, with parking for roughly 20 vehicles and a single-lane concrete ramp. The launch is free and open to the public. No private docks or commercial rentals operate on the lake, so you will need your own boat or canoe to fish effectively, though shore fishing is possible from the launch area and a few spots along the road.
Key Takeaways
- Mirror Lake holds lake trout and smallmouth bass, with the trout fishery strongest in spring and fall when the water is cool.
- The public boat launch on the north shore is free, but the ramp is single-lane and parking fills on weekends — arrive early or fish on weekdays.
- New Hampshire fishing licenses are required for anyone 16 and older; a three-day license costs less than a full-year license if you are visiting briefly.
- The lake is open year-round, but ice-out typically occurs in late April, and the best trout fishing runs from May through June and again in September and October.
- Smallmouth bass season runs from the third Saturday in June through November 30, with a 12-inch minimum length and a five-fish daily limit.
Lake trout fishing in spring and fall
Lake trout (also called mackinaw) are the signature species at Mirror Lake and respond best when water temperature is below 65 degrees Fahrenheit. That window opens in May, shortly after ice-out, and closes by late June as the lake warms. The trout move deep during summer, making them difficult to catch from shore. The fall bite resumes in late August or early September and holds through October as the water cools again.
Effective techniques include trolling with small spoons (size 2 or 3) in silver or gold, or casting tube jigs in white or chartreuse from the boat in 30 to 60 feet of water. Early morning and late evening produce better than midday. If you are fishing from shore, focus on the deeper drop-offs on the north and east sides of the lake, particularly near the boat launch area where the bottom slopes away quickly. A three-way rig with a small spoon or live smelt works in spring, though live bait is less reliable in fall.
Smallmouth bass from June through November
Smallmouth bass season opens the third Saturday in June and runs through November 30. Mirror Lake's smallmouth population is healthy but not large — expect to catch fish in the 10 to 14-inch range, with occasional fish pushing 16 inches. The bass relate to rocky structure and weed edges, particularly along the eastern shore where boulders line the bottom.
Work topwater plugs and soft plastics (4 to 6-inch worms or crawfish imitations) in early morning and again in the last two hours before sunset. Midday fishing is slow. A 12-inch minimum length applies, and you may keep up to five fish per day. Catch-and-release is common and helps maintain the population, especially for fish under 13 inches.
Seasons and water conditions
Mirror Lake is fishable year-round, but conditions and fish behavior shift dramatically with the calendar. Ice-out occurs in late April most years, though timing varies by a week or two depending on winter severity. The lake typically freezes solid by mid-December and remains locked until spring thaw.
Summer (July and August) is the slowest period for trout because the lake stratifies and the fish move to deep, cold water where they are hard to reach without specialized equipment. Smallmouth bass remain active but bite best at dawn and dusk. Fall (September through November) is excellent for both species — water temperature drops, trout move shallower, and bass feed aggressively before winter. Winter ice fishing for lake trout is possible but requires checking current ice conditions and following New Hampshire's ice fishing regulations.
Access, parking, and regulations
The public boat launch is located on Enfield Street on the north shore of the lake. Parking is limited to roughly 20 spaces, and the lot fills quickly on weekend mornings, particularly in May and June. Weekday fishing offers more reliable parking and fewer crowds. The ramp is maintained year-round but is not plowed in winter, so ice fishing access requires walking in.
New Hampshire requires a fishing license for anyone 16 years old and older. Licenses are sold online through the New Hampshire Fish and Game Department website, at sporting goods stores, and at town offices. A three-day license is available if you are visiting briefly; a full-year resident license costs more but covers all waters in the state. Non-resident licenses are also available at higher cost. No special permits are required for Mirror Lake beyond the standard state license.
What to bring and how to prepare
Bring a depth finder if you own one — it cuts the learning curve significantly, especially for lake trout. A boat is nearly essential for consistent success, though a canoe or kayak works for smallmouth fishing along the shallows. If you are launching a boat, arrive by 8 a.m. on weekends to secure parking and avoid waiting for other anglers to clear the ramp.
Water temperature varies 40 degrees between winter and summer, so dress in layers and bring a rain jacket. The Upper Valley can be windy, particularly in spring, so check the forecast before heading out. Bring more tackle than you think you will need — the rocky bottom and weed edges snag lures regularly. A net is useful for landing larger trout and bass, especially from a boat.
Nearby alternatives if Mirror Lake is crowded
If the Mirror Lake launch is full, several other lakes in the Upper Valley offer similar fishing within 15 to 30 minutes. Mascoma Lake in Enfield and Lebanon holds smallmouth bass and some lake trout, and the launch there typically has more parking than Mirror Lake.
Newfound Lake, about 30 minutes south, is larger and more developed but offers better facilities and a more robust trout fishery. Umbagog Lake on the Maine border, roughly 45 minutes north, is a premier destination for lake trout and landlocked salmon but requires more travel and planning. Each lake has different access points and regulations, so check the New Hampshire Fish and Game website before heading out.
Frequently Asked Questions
Can I fish Mirror Lake without a boat?
Yes, but your options are limited. Shore fishing from the boat launch area and along Enfield Street works for smallmouth bass in June through November, particularly at dawn and dusk. Lake trout are difficult to catch from shore because they move deep in summer and require trolling or deep jigging in spring and fall. A canoe or kayak expands your range significantly.
What is the best time of year to fish Mirror Lake?
May through June is peak for lake trout, and September through October is excellent for both trout and smallmouth bass. Summer (July and August) is slowest because trout move deep and heat stresses the fishery. Winter ice fishing is possible but requires checking ice thickness and current conditions with local authorities.
Do I need a special permit to fish Mirror Lake?
No. A standard New Hampshire fishing license is all that is required. You can purchase a three-day license online or at any sporting goods store or town office if you are visiting briefly. The license covers all public waters in the state.
What size fish can I keep, and how many?
Smallmouth bass have a 12-inch minimum length and a five-fish daily limit. Lake trout have no minimum length and no daily limit, though most anglers practice catch-and-release for fish under 14 inches to maintain the population. Check the current New Hampshire Fish and Game regulations before fishing, as rules can change.
Is Mirror Lake good for beginners?
Mirror Lake is moderately challenging for beginners. The lake is deep and clear, which makes fish easier to spook but also easier to locate with a depth finder. Smallmouth bass fishing from shore or a canoe in June through November is a good starting point. Lake trout fishing requires more equipment and technique, so consider hiring a guide for your first trip if you want to target trout.