- In addition to combined storage in the New York City Delaware Basin
reservoirs, storage in Blue Marsh and Beltzville Reservoirs is used to
trigger drought warning and drought operation in the Lower Delaware River
Basin - that portion of the Basin downstream of Montague, N.J. This allows
for reductions in the Trenton flow target and the New Jersey diversion
when Lower Basin conditions are drier than in the upper part of the Basin.
Accordingly, Lower Basin operations are controlled by both Basinwide or
Lower Basin storage triggers, with the most limiting restrictions controlling.
Normal
The pool level in Beltzville Reservoir is at or above elevation 615
m.s.l. and the pool level in Blue Marsh Reservoir is at or above elevation
283 m.s.l.
| Trenton Flow Target | 3000 cubic feet per second |
| Allowable Diversion to New Jersey | 100 million gallons per day |
Drought Warning
The pool level in Beltzville Reservoir drops below elevation 615 m.s.l.
and the pool level in Blue Marsh Reservoir drops below elevation 283 m.s.l.
| Trenton Flow Target* | 2500-2900 cubic feet per second |
| Allowable Diversion to New Jersey | 70 million gallons per day |
Drought Center
Voice (609) 883 - 9500 
croberts@drbc.state.nj.us