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Summary table for water budgets completed by the Surficial Aquifer Studies

All flow data is in inches per year.

(--, no data; *, this value is the sum of all of the individual consumptive withdrawals used in the Upper Maurice water budget; water budgets for the Toms River and Metedeconk River were calculated separately in the report. Values in parentheses under the Toms River heading are values for the Metedeconk River Basin budget)

 

Great Egg Harbor River

Upper Maurice River

Toms River
(Metedeconk River)

Mullica River

 

Salem River

 

Maurice River

 

Rancocas Creek

Forked River

 

Cape May

Year

1928-88

1933-86

1980-89

1982-91

1983-92

1985-94

1986-95

1986-95

1990

Water-use data

1987

1987

1988

1989

1990

1994

1995

1999

1990

Precipitation (P)

45.3

44.5

46.4 (45.9)

45

45.4

42.9

47.3

44.7

41.9

Direct runoff (Qdr)

3.1

3.01

3.4 (7)

3.75

6.3

3.1

6.38

3.9

2.90

Base flow (Qb)

17.6

17.24

18 (15)

18.5

13

15.9

12.73

15.9

16.40

Evapotranspiration (ET)

24

24.84

23.5 (23.0)

22.15

26

24.6

25.9

23.4

22.4

Leakage (L)

0.3

0.1

0.002 (0.00044)

0.27

0.007

0.053

0.5155

0.22

0.13

Consumptive water use from surface-water  withdrawals (Ws)

--

--

0.13 (0.44)

0.17

0.107

0.014

0.22

0.019

--

Consumptive water use from unconfined groundwater  withdrawals  (Wg)

--

0.91*

1.4 (0.45)

0.17

0.136

0.79

0.056

0.404

--

Withdrawal, public supply, consumptive (Wp)

0.4

0.39

--

--

--

--

--

--

0.66

Artificial recharge to the surface-water system (Ras)

--

--

--

--

0.035

0.66

0.83

0.114

--

Artificial recharge to the unconfined groundwater system (Rag)

--

--

--

--

0.112

0.0054

0.1

0.125

--

Natural recharge to the aquifer (Rn)

18.3

18.57

19.4 (15)

18.94

13.03

16.1

14.1

17.5 a

10.35

Groundwater discharge
(Qg  = Qb - Ras + Ws)

--

--

--

--

--

15.3

12.1

25.1

--

Note:

Artificial recharge is water that pumped from the confined aquifers, used, treated, and then released in to the surface-water system, or water that was withdrawn from sources outside of the study area but released to streams within the study area. 

Artificial recharge to the groundwater system occurs where water is withdrawn from the confined aquifer, treated by septic systems, and then discharged to the unconfined groundwater system.

a-the value of Rn for the Forked River Surficial Aquifer Study ( Rng in the report) includes additional budget terms of Ri--which accounts for the groundwater inflow from adjacent surface-water basins outside of the study area—and Rns—which accounts for the natural recharge to the aquifer from precipitation.  This is necessary to account for those areas where the groundwater and surface-water divide do not coincide.

 

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