RELATIONSHIP BETWEEN SEEPAGE AND DISCHARGE FOR KABUL RIVER IN DISTRICT NOWSHERA

Abstract

Seepage from rivers is one of the major problems involved in the water-logging of adjacent area to the river. However, the advantage of conserving water is indispensable as freshwater resources are declining. The Kabul River is one of the main rivers in Khyber Pakhtunkhwa, Pakistan. It transports poor quality water and discharges it in the Indus River at district Attock. Its long portion is passing through sandy clay soils. The quantity of discharge varies along its length at different sections. Eight years (2005-2012) monthly discharge data was used to calculate seepage losses. The seepage losses (m3s-1km-1) along the length of river were calculated by using relationships presented by Nazir Ahmad, Molesworth and Yennidunia (Egyptian), and Pakistani Formula. An average value of these three equations was plotted against the discharge of Kabul River to develop Linear Logarithmic and power relationships. The seepage losses calculated using equation given by Nazir Ahmad were higher followed by Molesworth and Yennidunia (Egyptian), and Pakistani Formula.

Keywords

• discharge
• river
• seepage losses
• water-logging