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UNITED STATES DEPARTMENT OF AGRICULTURE <br />SOIL CONSERVATION SERVICE <br />356 Ranney Street <br />Craig, Colorado 81625 <br /> <br />January 30, 1987 <br />`Bill Agnew, Environmental Engineer <br />Trapper Mine <br />Post Office Box 187 <br />Craig, Colorado 81626 <br />Mr. Agnew: <br />Included is our best estimate on what the average production is for <br />irrigated and non-irrigated hayland in Moffat County. I will give <br />you a range. <br />Production varies radically depending on what soil is present and <br />what species have been established on the site. Production also varies <br />on how long the vegetation has been there. We find Instances where the <br />r pasture land is still increasing in production,has stabilized, or <br />actually is declining in production because ft's been there too long. <br />Production is also a matter of good or poor. management. In the non- <br />irrigated situation we find vast fluctuations in production based on <br />the annual rainfall and when that rainfall actually occured. <br />Production is also a function of aspect. <br />Irrigated hay Alfalfa 2000 to 8000 pounds of annual production. <br />Irrigated Mixed hay- alfalfa-grass mixes range from 2000 to 8000 <br />pounds of annual production. <br />Non-irrigated alfalfa grass mixes range from 1500 to 4000 pounds of <br />annual production. <br />Non-irrigated grass (intermediate wheatgrass) this range goes from <br />800 to 1800 pounds of annual production. <br />Non-irrigated alfalfa grass mixes range from 1500 to 4000 pounds of <br />annual production. <br />0 Fig. 4.5 -1. Soil Conservation Service Hayland <br />Production Estimates. <br />4 - 143 <br />0 <br />REVISED FEB 13 '87