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-58- to 1890. All other districts were a decade or two later. The storing of water for late summer use has done much to increase the productivity of agriculture. . In 1890, Terry Lake reservoir, just north of Fort Collins, was con- structed by the Larimer and '0eld Canal. Horace G. Clark described the change which that reservoir had made in the 'lives of farmers living under it, before the Nineteenth Irrigation Congress in Chicago in 1911. Mr. Clark who was a water user of the Larimer and Weld, said: "I was a farmer under this ditch, and with others, suffered from an insufficient supply of water. We looked with jealous eye on the profitable crops of potatoes grown by our brothers under old Greeley Ditch Number Two . . . . We could not raise potatoes. And we had frequently to irrigate our grain crop when it was too early--when it baked in the ground, turned the grain yellow, and cut the yield down one-third--for fear we would make no crop at all for lack of water later on. About one crop of alfalfa--the first--and a half crop the second cut. . . That was our condition under the Eaton Ditch . . . .prior to the advent of Terry Lake .'" Anothe~ phase of this search for more water with which to develop a higher agriculture was the development of interbasin and transmountain diversion. The Larimer County Ditch was the agency that pioneered in this field. A. A. Em,ards, director and secretary of that company, was the man who promoted this development. In 1890 the Larimer Oounty Ditch was started. Since it was the last but one of the major ditches on the river, its stream flow rights were very poor. That same year the company began to build the Grand River Ditch to intersect several tributaries of the Colorado River, and to bring the water over poudre Pass into the South Fork. In 1891 heavy rains washed out Chambers Lake dam, which the Larimer County Ditch Oompany had acquired and enlarged. As a result of the damages caused it was thought best to reorganize, so the 'Mater Supply and Storage came into existence. This company completed the Larimer County Ditch and several diversion projects. The "Sky Line" Ditch was begun in 1891 and completed 2 years later. This was an inter- basin prcject, bringing water from the Laramie River to the Poudre. The new ccmpany also completed the Grand River Ditch in 1895. The Sand Oreek Ditch diverting frcm Sand Creek and Deadman Creek into Sheep Oreek was built in 1899. The largest of all the diversions, until the Big Thompson, which was constructed and operated by the Laramie-Poudre District was the Laramie-poudre system. It was begun in 1910 and completed 2 years later. The tunnel through which the water was brought across the dividing mountains had a oapacity of 1,500 second-feet. This project provoked Wyoming into bringing a suit against Colorado. The resulting Supreme Oourt decision in this case limited the amount that could be diverted to a small fraction of the capacity of the system, and has prevented any further diversion projects from the North Platte and Laramie watersheds. These diversions bring into the poudre watershed about 25,000 acre-feet each season, and it has gone for the most part, not to irrigate new land, but to improve agriculture on land already under irrigation. .