- Size: Although this is a
sizable cove on the north side of the reservoir, the mouth is not
in sight from the parking lot along Triadelphia
- Habitat: The cove is bordered
on the steep eastern slopes by deciduous woods with a few remnant
pines and on the west (no public access) by mostly pine woods.
There may be either water or mudflats visible depending on the
season and the amount of rainfall.
- Best Months: March to mid-May;
August through November—much depends on the water
- Coverage Time: Fifteen minutes
to an hour.
- Trails/Paths: Public access is
along the east side only. During periods of low water, bear left
from the boat ramp along the wood edge skirting any mudflats.
When water levels are high, follow a faint fishing trail
beginning near the metal bench above the boat ramp. Scanning from
the head of the boat ramp is usually sufficient to determine
whether it is worth walking to a better vantage
- Notable Birds: Snow Goose, Northern
Pintail, Tundra Swan, Redhead, Wild Turkey, Tri-colored Heron, Western
Sandpiper, Dunlin, Alder Flycatcher, Prothonotary
- Amenities: Paved parking along
with a boat ramp are adjacent to Triadelphia Road. A portable
toilet is present during boating/fishing season. A small tot lot
and a few picnic tables can be found at the top of the hill east
of the parking lot.
- Handicapped Access: Much can
be seen and heard from the paved parking lot and boat ramp which
are the primary birding locations at this site.
- Operation and Hours:
Triadelphia Reservoir and surrounding land are owned and
operated by the Washington Suburban Sanitary Commission (WSSC).
Dawn to dusk, April 1–November 15 (ice cover can alter
opening and closing dates), except on posted fall deer hunting
days. Orange and higher security alerts close public access to
the reservoir. Required daily and seasonal boating and fishing
passes may be purchased at the Brighton Dam Information
- Special Attractions: Under the
right conditions, mudflats emerge bringing in a small number of
shorebirds. When water levels are high, migrant waterfowl may be
present. For the wildflower enthusiast, this site has one of the
best displays of trailing arbutus to be found in the
Compiler: Joanne Solem