lood-catchment basin
and a compensating reservoir. This reservoir would hold approximately
850,000,000 cubic feet. The construction of a reservoir at this place
offers no engineering difficulties, and the project may be regarded as
extremely favorable.

Dixons Pond, west of Rockaway Valley and northwest of Powerville, is a
small sheet of water which lies in a valley which might be flooded to a
greater height. By the erection of a dam 450 feet long and 30 feet high
a lake of 136 acres would be created, which would form a part of the
flood catchment and compensating service.

_Longwood Valley reservoir_.--A large storage basin is afforded in
Longwood Valley which, if developed to its full extent, would extend
from a point about a mile below Lower Longwood 7 miles up the headwaters
and reach to about 1-1/2 miles above Petersburg. An alternative
proposition is afforded which involves the submerging of less than half
this area.

A dam 800 feet long and 55 feet high might be erected across a gorge
about 1 mile south of Petersburg. There would be formed a lake of about
1.247 square miles, or 800 acres in extent. The hamlet of Petersburg
would be submerged, but the damages from the destruction of improved
property would not be very great, as the improvements and the land are
not especially valuable. This reservoir would have a capacity of about
964,000,000 cubic feet and the surface would be at a height of 800 feet
above sea level.

The alternative plan, that of using a longer stretch of the valley for
reservoir purposes, would involve the construction about 1 mile below
Lower Longwood of a dam 1,300 feet long and 110 feet high. The reservoir
thus formed would be 1,900 acres in extent and contain approximately
3,447,000,000 cubic feet. The drainage area above this dam is limited,
and if the reservoir were drawn down to an amount equivalent to 15
inches upon the drainage area there would still remain an enormous
amount of water which could be used in a compensatory way to tide over
dry seasons.

_Splitrock Pond._--By erecting a dam 550 feet long and 30 feet high
across a gorge at the outlet of Splitrock Pond, a lake could be formed
having an area of 625 acres and adding to the present storage capacity
of the lake an amount approximately equal to 475,000,000 cubic feet,
equivalent to 38.75 inches on the drainage area.

Thus it is seen that if this reservoir were drawn down an amount
equivalent to 15 inches on the drainage