ings,
in a flood similar to that of October, 1903.
Maximum discharge, 12,000 cubic feet per second.]

With the exception of the Millington reservoir site where the cost
of the dam is a small factor, the elevation of flow line in the
various reservoirs which determines the capacity was fixed so as to
afford an approximate storage equal to a run-off of about 8 inches
from the drainage area above each dam site. This amount is somewhat
in excess of the run-off for the flood of October, 1903. It was
found impracticable on the Rockaway reservoir site to provide for a
storage greater than 6 inches. On the Wanaque the amount which can
be stored falls slightly under 8 inches, while on the Ramapo it is
possible to obtain only 5-1/2 inches, by reason of the fact that
with a greater storage capacity the slack water would reach into
New York State. The economical height for a dam at the lower end of
the Great Piece Meadow, if such dam is provided with fixed
discharge openings which will carry a maximum outflow of 12,000
cubic feet per second, will provide a reservoir which will dispose
of a run-off of 9 inches on the drainage area above.

The following combinations of reservoir sites, with their
respective drainage areas, proportional storage, and estimated
costs, give the facts necessary for final deductions:

--------------+---------------+-----------+---------------+-----------
| Drainage | Water | Equivalent |
Site. | area. |collected. | area | Cost.
| | | retarded. |
--------------+---------------+-----------+---------------+-----------
|_Square miles._| _Inches._ |_Square miles._|
Ramapo | 140 | 5.5 | 96.25 | $900,000
Wanaque | 83 | 7.7 | 80 | 1,000,000
Pequanac | 52 | 8 | 52 | 1,800,000
Rockaway | 114 | 6 | 85.5 | 600,000
|---------------+-----------+----------------+----------
Total | 389 | | 313.75 | 4,300,000
|=======================================================
Ramapo | 140 | 5.5 | 96.25 | 900,000
Wanaque | 83 | 7.7 | 80 | 1,000,000
Rockaway |