What you cannot fish for
Start with the prohibition, because the river's whole reputation was built on it. Atlantic salmon in the Gulf of Maine population were listed as endangered in 2000, and the 2026 IFW lawbook carries sea-run Atlantic salmon in its general table as an endangered species with no fishing permitted, anywhere, by anyone. The Narraguagus was one of the rivers that reputation came from: Cable Pool in Cherryfield, where the river runs under the old railroad bridge that is now the Downeast Sunrise Trail, was one of the country's best-known salmon pools, and a 1940s brochure from the Narraguagus Fish and Game Association bragged that the 1939 run surpassed any river in the salmon area. Wikipedia's summary says the Memorial Day weekend opener drew anglers from far away. The Maine Monitor, reporting in September 2026, says only about 25 wild adults have returned to the river each year in recent decades. If you hook one while trout fishing, it goes back immediately, without a photo.
What you can: fly-only brook trout from Deblois to Cherryfield
The main stem runs about 40 miles from the Downeast lakes to the head of tide at Cherryfield according to the Maine Monitor, 55 by Wikipedia's count from the outlet of Eagle Lake in T34 MD through Beddington Lake, past Lead Mountain, through Deblois and Cherryfield to Narraguagus Bay at Milbridge. The lawbook entry, Narraguagus River, T34 MD to Deblois, makes the reach from the Route 193 bridge in Deblois down to the downriver side of the Route 1 bridge in Cherryfield fly fishing only, with one carve-out: from 100 feet above the ice control dam in Cherryfield upriver about 3.66 miles to a pair of red markers, general law fishing applies. The fish here are brook trout, native and wild; the 2025 IFW stocking report lists nothing planted in the river. Route 193 follows the valley from Cherryfield up through Deblois toward Beddington, and the Stillwater Road and Dam Road off 193 in Cherryfield lead to Cable Pool Park, the picnic area and memorial the watershed council, the towns and the Downeast Salmon Federation dedicated in 2005. Above Deblois the river is what the Maine Monitor's reporter found on a canoe trip this year: small, wild, undeveloped, shaded, with a rocky bottom, and with an ATV club and blueberry barrens for neighbors. The West Branch, T22 MD to Cherryfield, is a separate entry with an 8-inch minimum on brook trout, a two-fish limit, and artificial lures only from the headwaters to Spring River.
The Cherryfield dam is gone
The lawbook you are reading still describes an ice control dam in Cherryfield. The Army Corps built it in 1961 to hold back the ice jams that used to flood the town, it had a fish ladder on one side that alewives used and salmon often could not find, and by 2023 it was aging badly enough that residents voted to take it over from the Corps and take it down, which required an act of Congress. Construction began in June 2026 with the Downeast Salmon Federation running the job, funded through the Maine Coast Heritage Trust, the Atlantic Salmon Federation and The Nature Conservancy, and it is due to finish by November 2026. What replaces it is a set of stair-stepping pools designed to slow ice but not fish. It was the last barrier on the main stem: Project SHARE, the landowner coalition that includes Wyman's, replaced 61 fish-blocking culverts in the watershed in the early 2000s and has been dropping whole trees into the river to narrow and cool it. Expect the closed zones written around the old dam to be redrawn; until IFW does that, fish the lawbook as printed.
Cherryfield gauge, 227 square miles
USGS 01022500 sits at Cherryfield with 227 square miles above it and reports flow and temperature. No shop publishes a wading number, so the 150 to 500 cfs range on this page is the gauge's own record and should be read that way: monthly medians since 1948 are about 1,210 cfs in April, 560 in May, 285 in June, 150 in July, 106 in August and September, 220 in October and 530 in November. The fly-only water fishes best on the May drop and through June; by August a reading near 100 is normal and the temperature trace matters more than the flow. Late September, the gauge was reading 16 cfs, which is a drought, not a fishing number.
Hatches on a Downeast freestone
There is no Narraguagus hatch chart. The rows below follow the Maine-wide FlyFishFinder chart and Perfect Fly's Penobscot sampling, which put olives from late April, Hendricksons in the second half of May, caddis from late May through summer, March Browns, Light Cahills and yellow stoneflies in June, and terrestrials from July. Downeast is cold and late; assume the tail end of each window rather than the front.
The 2026 lawbook, line by line
Narraguagus River, T34 MD to Deblois, is South Zone water, open to open water fishing January 1 to December 31 under general law unless a line below says otherwise. Closed to all fishing: the 150 yards from the red marker at the mouth of Sodom Brook in Deblois down to a second red marker. Route 193 bridge in Deblois to the downriver side of the Route 1 bridge in Cherryfield: fly fishing only, except the 3.66 miles above the ice control dam, which is general law; see the separate Schoodic Brook listing. Closed within 100 feet of the ice control dam under Title 12, section 12457. Closed from the ice control dam to the railroad bridge in Cherryfield, except that from May 1 to June 10 the water between two sets of red markers, 100 and 450 feet below the dam, is open fly fishing only. General law on the open reaches means five brook trout a day with a 6-inch minimum in rivers, two browns, and bait allowed in the South Zone. Buy the license, carry the lawbook, and know that the salmon rules do not bend.