Canal water is a very valuable in Pakistan. For the last 100 year or so, irrigated plantations are being raised in Pakistan for fuel wood and timber. Except for Shisham (Dalbergia sissoo), the quantity of water required by different tree species for their survival and optimum growth has not been known. A study was started in Chichawatni plantation to ascertain the effect of three deltas of water viz.3,4.5 and 6 feet in four species Eucalyptus camaldulensis, Bombax malabarica, Morus alba and four exotic clones of poplars. It was found that there was almost linear relationship between the depths of water applied and volume.