Water Resources Review – June 2000

Updated: July 6, 2000

See definitions.

Maryland And Delaware. -- Streamflow was in the normal range throughout the entire bi-state area. In Western Maryland and on the upper Potomac River, streamflow decreased, although moving from the below-normal into the normal range. In Central Maryland, flows remained about the same, and remained in the normal range. On the lower Potomac River, flows increased, and moved from the below-normal into the normal range. On the Eastern Shore, streamflow decreased, and remained in the normal range.

Contents of the Baltimore reservoir system decreased, and near month's end were 93 percent of capacity. End of month contents = 70,580 million gallons.

Ground-water levels decreased throughout the entire bi-state area. In western Maryland, ground water levels fell, although remaining in the above-average range. In west-central Maryland, ground water levels decreased, and remained in the below-average range (below average since June 1998). In central Maryland, water levels decreased, although moving from the below-average into the above-average range. On the Eastern Shore, water levels fell, and remained in the below-average range.

Surface Water Data – June 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
(in.)		 Cumulative runoff Maximum
(ft3/s)
---
(Date)		 Minimum
(ft3/s)
---
(Date)
Mean
(ft3/s)		 Percent of
normal		 Total
(in.)		 Percent of
normal		 Departure
(in.)
Potomac R at
Paw Paw, W.Va.		 2090 94 0.75 8.46 64 -4.84 4760
(7)		 1000
(30)
Seneca C at
Dawsonville, Md.		 108 117 1.19 12.93 119 +2.03 294
(26)		 58
(12)
Potomac R near
Washington, D.C. 1		 7840 103 0.76 8.80 73 -3.20 12900
(18)		 4510
(15)
Choptank R near
Greensboro, Md.		 66.3 94 0.66 15.95 115 +2.05 98
(20)		 47
(26)

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 – June 2000

Well number Well name Previous month Reporting month
Date measured Level
(feet below
land surface)		 Date measured Level
(feet below
land surface)
GA-Bc 1 Accident 05-30 12.20 06-28 14.13
WA-Be 2 Fort Frederick 05-30 31.03 06-28 31.41
MO-Eh 20 Fairland 05-30 12.32 06-28 12.60
Jd 42-03 Camden 05-30 5.92 06-29 6.49

Name Date measured Water level
(feet below
land surface)		 Departure from average
(feet)		 Change since previous month
(feet)		 Change since previous year
(feet)		 Last reversal
Change
(feet)		 Date
(month, year)
Accident 06-28 14.13 +0.03 -1.93 +1.89 -5.41 May 2000
Fort Frederick 06-28 31.41 -1.62 -0.38 +1.79 -4.29 April 2000
Fairland 06-28 12.60 +0.12 -0.28 +2.47 -1.97 May 2000
Camden 06-29 6.49 -0.42 -0.57 +1.13 -1.10 May 2000

Potomac River near Washington, D.C. – June 2000

Last day: 12100 cubic feet per second (estimated).
Reference period: 1961 to 1990.

Chesapeake Bay – June 2000

Total flow into the Chesapeake Bay was about 53.8 billion gallons per day, (BGD) 86 percent of average. June average: 62.4 BGD.

The three largest rivers flowing into the Chesapeake Bay contributed about 85 percent of total inflow in May, with individual contributions of:

River Percentage of total inflow
to Chesapeake Bay
Susquehanna River 63
Potomac River 15
James River 9
Total 87
Other rivers 13

Period of record: 1951 to Present.

Related Information

Reports for previous months
Monthly Water Conditions in the Chesapeake Bay Region
National Water Conditions
Definitions of terms
Northeast Regional Climate Center (from Cornell University)
Northeast Climate Impacts - monthly
Monthly Climate Summary
For additional information, contact:

webmaster@md.water.usgs.gov or call 410-238-4200.