Aspen Journalism Kenney Reservoir, located just east of Rangely in late October, has a picnic area. Kenney Reservoir is silting in, and the Rio Blanco Water Conservancy District is proposing building a new off-channel reservoir upstream on the White River. Heather Sackett/Aspen Journalism RANGELY — As its trial date in water court approaches, hundreds of pages of depositions obtained by Aspen Journalism reveal state engineers’ sticking points regarding a proposed reservoir project they oppose in northwest Colorado. Over a few days in November, state attorneys subpoenaed and interviewed several expert witnesses and the Rio Blanco Water Conservancy District manager in the White River storage-project case, also known as the Wolf Creek project. Their questions centered on the town of Rangely’s water needs and on whether water is needed for irrigation.