HYDROLOGIC CONDITIONS IN THE UPPER DELAWARE RIVER BASIN
Compiled by the Office of the Delaware River Master, Milford, Pa.
(Preliminary data - subject to revision)
PRECIPITATION, IN INCHES
|
|
Dec. 1940 to Oct. 1998
|
November 1998 to October 1999
|
|
|
Average
|
Actual
|
Percent of average
|
Excess (+) or deficit (-)
|
|
|
Amount
|
Cumulative
|
Amount
|
Cumulative
|
By month
|
Cumulative
|
By month
|
Cumulative
|
|
Nov.
|
3.91
|
43.28
|
1.58
|
39.28
|
40
|
91
|
-2.33
|
-4.00
|
|
Dec.
|
3.40
|
39.37
|
1.53
|
37.70
|
45
|
96
|
-1.87
|
-1.67
|
|
Jan.
|
2.97
|
35.97
|
5.65
|
36.17
|
190
|
101
|
+2.68
|
+.20
|
|
Feb.
|
2.66
|
33.00
|
1.67
|
30.52
|
63
|
92
|
-.99
|
-2.48
|
|
Mar.
|
3.30
|
30.34
|
4.40
|
28.85
|
133
|
95
|
+1.10
|
-1.49
|
|
Apr.
|
3.78
|
27.04
|
2.29
|
24.45
|
61
|
90
|
-1.49
|
-2.59
|
|
May
|
4.19
|
23.26
|
3.32
|
22.16
|
79
|
95
|
-.87
|
-1.10
|
|
June
|
3.94
|
19.07
|
*2.28
|
18.84
|
58
|
99
|
-1.66
|
-.23
|
|
July
|
4.12
|
15.13
|
1.71
|
16.56
|
42
|
109
|
-2.41
|
+1.43
|
|
Aug.
|
3.87
|
11.01
|
3.05
|
14.85
|
79
|
135
|
-.82
|
+3.84
|
|
Sept.
|
3.74
|
7.14
|
9.08
|
11.80
|
243
|
165
|
+5.34
|
+4.66
|
|
Oct.
|
3.40
|
3.40
|
2.72
|
2.72
|
80
|
80
|
-.68
|
-.68
|
Note: Amount shown in cumulative columns is total from month shown to present.
|
STREAMFLOW, IN CFS
DELAWARE RIVER AT MONTAGUE, N.J.
|
|
Month
|
1940-98
|
1999
|
Percent of
|
|
Maximum
|
Median
|
Minimum
|
Monthly mean
|
median
|
|
October (observed)
|
15,690 (1955)
|
2,348
|
807
|
(1941)
|
3,289
|
140
|
|
October (adjusted)
|
18,570 (1955)
|
2,147
|
322
|
(1964)
|
4,422
|
206
|
|
|
|
|
|
|
|
|
|
November (observed)
|
11,760 (1951)
|
4,730
|
995
|
(1964)
|
|
|
|
November (adjusted)
|
16,160 (1955)
|
6,262
|
390
|
(1964)
|
|
|