Part 10

GENERAL CONCLUSIONS.

1. Great floods in the Passaic Basin arise only after a specially violent precipitation.

2. Under present conditions floods may be expected at frequent intervals.

3. A part of the damage along the lower valley is the result of encroachments on the part of individuals and public and private corporations.

4. The channel in the lower valley may be improved at certain points by straightening it and judiciously making cut-offs.

5. Without the construction of numerous levees the lower valley channel can not be made to carry great flood waters without damage.

6. Immunity from floods can be effected only by the construction of catchment reservoirs in the highlands or levees in the lowlands.

7. Levee construction would involve more damage than is now caused by floods, and the cost thereof would be prohibitive.

8. Flood catchment reservoirs may be constructed economically and provide storage to compensate for the dry-season flow, thereby maintaining water power at Paterson, Passaic, and other points, and providing for municipal water supply in the future.

INDEX.

Arch street bridge, Paterson, destruction of; 27

Beattie's dam, flood flow at; 16-17 flood period at; 9 view of; 16

Bridges, destruction of; 26-27

Capacity of streams, increase in; 28

Central Basin, damage in; 24 flood in, descent of; 14-15

Charlotteburg, rainfall at; 11, 12

Chatham, flood period at; 10

Chester, rainfall at; 11

Cranberry Pond, dam at, failure of; 24

Damages, discussion of; 23-28

Darlington, reservoir site at; 33

Dixons Pond, reservoir site at; 37

Dover, rainfall at; 11, 12

Drought, relation of rainfall to; 12

Dundee dam, flood flow over; 17-22 flood flow over, diagram showing; 20 flood period at; 9 floods at, comparison of, figure showing; 18

East Jersey Water Company, damage at pumping station of; 25-26

Elizabeth, rainfall at; 11

Essex Fells, rainfall at; 11, 12