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001810 . northwest of, end 3JJ feet higher than, the town. From the reservoir a pressure 'Pipe led into town, where on the bank of Cool Creek two impulse water wheels were belted to electric generators of 85 kilowatts total capaei ty. About 1918 decrease in bose flow und increase in domestic con- sumption and in the use of electri ci ty ex.'lQusted the flol'! of Coal Creek in winter. A filing was mad,) for the enlargement of the noturnl Lr.ke Brennon, 8 miles west of Crested Butte, situated just across a low di- vide fram the head of Coal Creek in the drainage area of Anthracite Creek. The filing callod for an increase of 20 feet in depth of the Inke to store 925 acre-feet of water, but actual construction was limited to 10 foet ond provides ~85 acre-feet of stored water. Later, because of the continued ~ecrease of base flow (me water wheel vms teken out !'.nd a sternn plnnt instolled to cerry the penk of the domnnd for electricity. For many years the rencining water wheel has carried only the light day load, and during the winter of 1939 the totcl flow fell to the point 'IIh,~re the supply vms not sufficient for the domestic demand. Future Demr,nd The proposal to build e nen dnm at Lnke Brennen and store 1,000 acre-feet of wntor raises the q,uestion as to what is, or Mould be, ade- quate storage for the needs of tho to.m. Storage capacity of 1,000 acre- feet is, in this instance, subject to practically no loss from evaporation, and in fact the yield of the resorvoir will be greater by practicolly the winter flow o~ the streams feeding the reservoir. Crested Blltte, because ef the stendy production of domestie hard coal, shows little change in population over n long poriod of years. In . . -3-