144
U. Shavit et al.
and Doshen canal, sampling sites for both discharge and concentration, and the
boundaries of the two areas for which a mass balance was computed (Dalhamia -
Neve Ur and Neve Ur - Hamadia). Table 1 summarizes the up-to-date flow-rate
measurements obtained along the river (discharge will further be obtained through
winter and summer 2001). It shows that the discharge of the unknown input in
February and March is about 720 and 570 f S-1 respectively. This flow enters the
river in the south part (Neve Ur - Hamadia) alone. The negative value found in the
north part in March is impossible. It is assumed, therefore, that the pumping report
is incomplete. Since the conductivity of the Lisan formation is poor, water can
flow only through conducting regions such as preferential ancient dry streams. It
was suggested that the unknown inflow passes through the ancient wadi Tabor and
wadi Arab in the south part and through the ancient Yarmouk sediments in the
north part.
Table 1. Flow-rate measurements obtained along the Dalhamia - Hamadia region of the
river. Site numbers refer to locations in Fig 16
Site
Discharge (f S-I)
Name
26-27/2/2001
29-30103/2001
Dalhamia
4
883
921
Yarmouk
5
173
70
Yarmouk pumps
5
-187
-51
Gesher pumps
6
-123
-122
Canal (81)
68
155
Canal (79)
31
21
Neve Ur
7
-839
-695
Unknown net inflow
3
-284
(calculated)
Neve Ur
7
839
695
Neve Ur north pumps
7
-160
-233
Neve Ur south pumps
9
-80
-80
Wadi Arab
8
160
165
Menashia
12
18
0
Teibeh
13
3
30
Zorpumps
11
-167
0
Doshen canal
87
12
Doshen pumps
10
-244
-125
Hamadia
11
-1155
-1007
Unknown net inflow
716
568
(calculated)
Total unknown inflow
719
284
{calculated}