Operational Plan for the Restoration of Diadromous Fishes to the ...

DMR has restored alewife runs throughout the State by stocking six adults per
surface acre for at least one generation (four years). DMR considers runs to be selfsustaining
when 35 adults per surface acre return to the spawning area annually,
and estimates that stocking may have to continue for as many as four generations
(16 years) to achieve that level of returns. Approximately 65 tankloads (1100 gallon
tank) of fish will be needed to stock Phase 1 lakes (Table 4).
Table 4. Number of fish to be stocked in Phase 1 lakes.
Phase 1 lakes for
restoration
Number of
tankloads
Actual
stocking
Estimated
production
Chemo Pond 5 7,500 269,310
Pushaw Lake 20 30,000 1,188,160
Boyd Lake 4 6,000 236,175
Little Pushaw Pond 2 3,000 96,585
Mud Pond 1 1,500 85,972
Endless Lake 6 9,000 352,265
Cedar Lake 3 4,500 160,975
East Branch Lake 4 6,000 263,677
Saponac Pond 4 6,000 216,670
Madagascal Pond 3 4,500 185,650
South Branch Lake 8 12,000 478,225
Mattamiscontis Lake 4 6,000 240,875
Little Mattamiscontis Lake 1 1,500 64,625
Total 65 97,500 3,839,164
6.1.4 Monitor adult alewife returns by annual counts at Milford, West Enfield,
Pumpkin Hill, and Howland and biological samples at Milford.
Counts at each of the 12 Phase 1 lakes above Milford to determine whether the run
is self-sustaining is not feasible. Monitoring annual adult returns at Milford and each
of the four subdrainages being stocked (Pushaw, Passadumkeag, Piscataquis,
mainstem above West Enfield) should be sufficient. Runs in Phase 1 lakes would be
considered self-sustaining when annual adult returns are approximately 532,000 at
Milford; 116,700 at West Enfield; 60,000 at Pumpkin Hill; and 115,700 at Howland or
239,300 into Pushaw Stream. In addition, the presence of juveniles or juvenile
emigration should be confirmed at each lake.
Enumerating adult returns at these fishways will allow DMR to assess the status of
the restoration, the timing of migrations, and passage effectiveness.
6.1.6 Biweekly beach seine survey-see 3.1.4
6.1.7. and 7.1.7 and 8.1.4 and 9.1.2 Conduct annual boat electrofishing survey
to assess changes in community structure.
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