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VEGETATION Portions of the bottom and general side slopes of the East Roatcap Drainage pattern are devoid of the dense growth of oak brush characteristic of the steeper upland areas. In the clearings, the vegetation consists primarily of a mixture of perennial and annual grasses and forbs. Dominant species include bluegrass, western wheatgrass, smooth brome, and red top. There are no plant species that are indicative of subirrigation. i.AND I1RF. The area has been used historically for cattle grazing and wildlife habitat. The areal extent of some clearings along the Eas[ Roatcap drainage pattern totals approximately 40 acres. The drainage pattern has no indication of ter- race deposits. Many basaltic boulders have moved downslope with the soil being formed, and some are in the stream channel. There is no indication of signifi- cant alluvial sediments and irrigation. The land is not suitable for culti- vated crop production because of the lack of water available for supplemental irrigation, rough topography, steepness of slopes, and surface stoniness. WATER RIGHTS A revlew of the water rights listed for East Roatcap has shown no direct diver- sions from East Roatcap Creek. Within Roatcap Creek, 81.015 cubic feet per second have been decreed for irrigation use and 5.01 cubic feet per second have been decreed for other uses such as domestic, stock pond, and fish culture. Irrigation is the predominant use of water from Roatcap Creek. Six irrigation ditches are currently adjudicated for diversion from Roatcap Creek. Also, • there is diversion of water from the Overland Ditch into East Roatcap and West Roatcap Creeks for irrigation use. Two ditches show no water being diverted through them in the last 20 years. This is based on a review of available State Engineer's Office records and interviews with the water commissioners. Water is diverted down East Roatcap Creek from Overland Ditch to the Roberts/ Stucker Ditch. The Roberts/Stucker Ditch diverts its water into the Stucker Mesa area in the late irrigation season.