Abstract:
In spite of multi sources of irrigation water the College of
agricultural studies farm, there has been a continuous and
growing complaint of irrigation water shortage. This shortage
complaint sometimes embraced domestic water supply.
This is actually the main incentive behind this study. The
main objective of the study is to estimate the actual total monthly
capacity of all the college farm water resources, the actual farm
water requirements and judge the situation.
The computer program (cropwat 4 windows) was used to
estimated the actual reference evapotranspiration (ET 0), crop
coefficient (Kc) for farm crops and hence the actual farm crop
water requirements.
Gross water requirements was estimated by adding about
15% total losses.
Individual monthly water sources capacity was estimated for
the four water sources i.e : Two shallow wells, one deep bore and
the river pump station.
The total monthly water capacity of the college ranges
between (56722) and (65988) m3, While the total monthly water
requirement ranges between (4776.1) and (13943.4) m 3.This
yields a monthly water surplus that ranges between (48818.7)
and (58508.6) m3.This water surplus can monthly irrigate the
areas ranges between (48 fedd) and (136 fedd).
The current irrigation water rates are estimated to be 210
SDG per feddan.
The study results showed that the monthly water capacity of
the college farm is more than sufficient, even under the present
operational time table. More water can be made available if the
operational time is raised from six hours per day to eight hours.
The chemical laboratory tests of Shambat shallow wells
water quality showed that Shambat water is highly suitable for
irrigation.
The biological laboratory tests showed that the infectious
bacterial load is very high and that the shallow wells water is not
safe for human use.