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rJittle Thompson River. Sedimentation is a problem in these ponding areas with large amounts usually deposited arounrJ the fire station. Sedimentation has also reportly plugged a culvert under the Great Western Railroad Tracks. The final drainage problem area i;; located in the vicini ty of the elementary school. Runof f ou': of two rela t ively small sub-basins drains down and flows around either side of the elemE,ntary school and along county Road 21 (Quentine). The spI i t flow then runs run off over the small bluff in several different directions. These flow splits cause siqnificant erosion problem;; north of Broad Street along Qunetine,. 'oauline, Olive, Norma and Marjorie Avenues. Most of the runoff f:rom these tivO basins was originally planned to flow into the [,il:t:le Thompson via drainage waste ditches along County Road 21 (;)uent ine lWenue). flowever, these ditches have not been properly maintained over the years and grade of roads and intersections jave limited tjeir usefullness. One complicatinq factor to the analysis of drainage probl,~ms in Milliken is the affect of the Little Thompson (Hillsboro) Irrigation DitCh, which comes out of Hillsbm:o ResE!rvoir, upon flood flows originating in the upper basin. During smaller storms this ditch could divert most of the excess flows out of the basin into a sump near the Dent caUroad junction. HO\.ever, durinq large storms this ditch clogs up with sediment forcing flood :flows to spread out along the di ';:ch and then ove rtop. This causes flood runoff in areas which nonnally are not: anticipated and once this runoff is out onto the re:~atively flat farm lands just south of town it can eas ily spl it and find its way into any one of the three main intermittent streams. D~nages Accordinq to the Reporter-Herald, Milliken Fire Chief Jerry Kilgore, "estimated that the floodinq caused at least $5,000 damage." Most of the damage was caused by standinq water, which flooded several homes and businesses, and the deposition of larqe amounts of sediment. The only notab::..'o' exception to this \.as the street erosion that occurred near the elementary school. Also, portions of driveway~: were v;ashed out in the street erosion area as well. The primary recovery costs involved clean-up expenses and repair of erosion damage. No major f'itructural damages we):e noted anywhere in town and there were no inj uries or deaths. solutions for Investigation~: The biggest single drainage probl,,,rn at Milliken is the lack of a well defined drainage path to the Little Thompson RivE,r. 'rhe solution to Milliken's drainage problems invol,re acquisition, development and maintenance of a 'veIl defined drainage path to the r~ittle Thompson river. This solution will require at least -6-