r - part - usaid

cost af well construction, For the Central Range, the NPV
represents an additional cost of US$2,227 over and above the
initial constructfan cost. Far these calculations, the "border
price" of U.S.SQ.39 per liter is used for diesel*
If the local market price of So.Sh.18 per liter, converted
at the 83:L rate of exchange to U.S.$0.22, is used, the NPV of
net costs and revenues gives a credit of $10,750 for the Bay
Region, and $3,270 far the Central Range.
4.3.4.2, Community Consumption and Ability to Pay
Many of the assunptions used in the above calculations are
questionable. For example, is it reasonable to assume that the
total community with reasonable access to a well can use all of
the water produced in eight hours ~umping? The following
calculation suggests that it is. The population data for the
Bay Region is taken, unqualified, from the Southern Rangelands
Survey (RMR, 1985).
Production
I---------
----------
8 hours per day @ 12 m3 per hour
Population
----------
---------
96,000 less 10% = 86,400 liters per day
----------
Animals per head
Total Bay Region Data of population
Pap ' n Wet 1983 Dry 1984 Average (Dry) (A- 1
----- ----I----
1-11--- -------------------------
Persons :
Rural 501,713 479,862 490,788
Nomadic 226,543 9,902 118,243
Total 728,256 489,804 609,030
Camels 742,038 360,599 551,319 0,736 0.905
Cattle 751,468 537,021 644,245 1 096 1.1158
Sheep 102,915 78,086 90,501 0,159 0.149
Goats 488,164 455,838 472,001 0.931. 0.775
Sfi 6 gts 591,079 533,924 562,502 1.090 0.924
On the assumption that the wells are used for the eight
months of the dry season, the "animals ger head of populationgf
figures used should be those for the dry season only,
~xtrapolating those figures to arrive at the populations