DESCRIPTION
The Clallam Conservation District through a public-private partnership of the Cline Irrigation District, Clallam Ditch Company and the Dungeness Irrigation Group, replaced approximately 17 miles of open ditches with 15 miles of pipelines. This project saved an estimated 1,833 acre-feet per year (6 cubic feet per second) of water, increasing late summer and drought year flows in the river by approximately 10%. This directly benefits all salmon in the Dungeness River from river mile 7.2 downstream. Benefited fish include four Threatened salmonids - Puget Sound Chinook, Hood Canal summer chum, steelhead, and bull trout. In addition, the lower river and Dungeness Bay are on the 303(d) list for fecal coliform bacteria. The piping eliminated tailwater spills and associated contamination to Dungeness Bay.
In 2007, the Clallam Ditch Company and Cline Irrigation District main canals, which crossed one another four times, were replaced with a single pipeline. Only 52% of a 2006 SRFB application was funded thus funding was insufficient to complete piping of all lateral ditches, install necessary pressure reduction and shutoff valves, and flow measurement devices. This project pertained specifically to the piping of the 7 lateral ditches (approximately 15,000') that still needed to be piped, installation of valves and associated appurtenances, and flow measurement devices necessary for proper management of the new system. Due to insufficient funding, one small lateral at the end of the Cline system remains open. This lateral does not lose much conveyance water, but it does dump tailwater into Dungeness Bay.