Water Resources Review – October 2000
Updated: October 31, 2000
See definitions.
Maryland And Delaware. -- Streamflow decreased throughout the entire bi-state area. In Western Maryland and on the upper Potomac River, streamflow decreased, and moved from the above normal into the normal range. In Central Maryland, flows decreased, also moving from the above normal to the normal range. Flows on the lower Potomac River followed suit, decreasing, and moving from the above normal into the normal range. In north east Maryland, flows decreased, and remain in the normal range. On the Eastern Shore, streamflow decreased, and moved into the normal range, after above normal flows since July.
Contents of the Baltimore reservoir system decreased, and near month's end were 85 percent of capacity. End of month contents = 64,270 million gallons.
Ground-water levels fell throughout the entire bi-state area. In western Maryland, ground water levels fell, moving from the above to below-average range. In west-central Maryland, ground water levels decreased, and remain in the above-average range. In central Maryland, water levels decreased, and moved from the above to below-average range. On the Eastern Shore, water levels fell, and remain in the above-average range.
Surface Water Data – October 2000
[% = percent; ft³/s = cubic feet per
second; in. = inches; Date = day of month;
1 = Includes diversions for water supply; * = Above normal range;
# = Below normal range]
| Station name |
Discharge |
Runoff
|
Cumulative runoff |
Maximum
|
Minimum
|
|||
| Mean |
Percent
of |
Total |
Percent
of |
Departure
|
||||
| Potomac R at |
990 |
115 |
0.37 |
0.37 |
116 |
+0.05 |
2040 |
671 |
| Seneca C at |
54.8 |
104 |
0.62 |
0.62 |
103 |
+0.02 |
67 |
47 |
| Potomac R near |
3980 |
127 |
0.39 |
0.39 |
126 |
+0.08 |
9860 |
2360 |
| Deer C near |
58.1 |
79 |
0.72 |
0.72 |
81 |
-0.17 |
68 |
53
|
| Choptank R near |
88.4 |
276 |
0.90 |
0.90 |
273 |
+0.57 |
216 |
49 |
Normal is defined as the median (50th percentile) of long-term monthly-mean discharge or monthly total runoff. The normal range is defined as discharge or runoff falling between the 75th and 25th percentiles of long-term records.
Ground Water Data – October 2000
| Well number |
Well name |
Previous month |
Reporting month |
||
| Date measured |
Level
|
Date measured |
Level
|
||
| GA-Bc 1 |
Accident |
09-29 |
12.76 |
10-30 |
15.70 |
| WA-Be 2 |
Fort Frederick |
09-29 |
32.74 |
10-30 |
33.36 |
| MO-Eh 20 |
Fairland |
09-29 |
13.25 |
10-30 |
14.34 |
| Jd 42-03 |
Camden |
09-29 |
5.76 |
10-30 |
6.25 |
| Name |
Date measured |
Water
level |
Departure
from average |
Change
since previous month |
Change
since previous year |
Last reversal |
|
| Change
|
Date
|
||||||
| Accident |
10-30 |
15.70 |
-0.23 |
-2.94 |
-0.23 |
-0.23 |
Oct 2000 |
| Fort Frederick |
10-30 |
33.36 |
+0.42 |
-0.62 |
+1.25 |
-6.24 |
April 2000 |
| Fairland |
10-30 |
14.34 |
-0.76 |
-1.09 |
-0.96 |
-1.09 |
Oct 2000 |
| Camden |
10-30 |
6.25 |
+1.26 |
-0.49 |
+1.62 |
-0.49 |
Oct 2000 |
Potomac River near Washington, D.C. - October 2000
Last day: 2360 cubic feet per second (estimated).
Reference period: 1971 to 2000.
Chesapeake Bay – October 2000
Total flow into the Chesapeake Bay was about 17.7 billion gallons per day, (BGD) 65 percent of average. October average: 27.3 BGD.
The three largest rivers flowing into the Chesapeake Bay contributed about 82 percent of total inflow in October, with individual contributions of:
| River |
Percentage
of total inflow |
| |
|
| Susquehanna River |
46 |
| Potomac River |
20 |
| James River |
13 |
| |
|
| Total |
79 |
| Other rivers |
21 |
Period of record: 1951 to Present.
Related Information
Monthly Water Conditions in the Chesapeake Bay Region
Northeast Regional Climate Center (from Cornell University)
Northeast Climate Impacts - monthly
For additional information, contact:
info@md.water.usgs.gov or call 410-238-4200.