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I I I I I I I I I I I I I I I I I I I FLOOD DOCUMENTATION REPORT CHAPTER 2 Phillips County, Colorado Flooding Week of June II t", 2007 Introduction During the week ofJunc t Ilh, 2007, several severe rainstorms impacted the northeast corner of Colorado extending into the southwest corner of Nebraska. The most intense rainfall occurred over a three day period extending from the 11lh to the 13lh of June. The impacted area included Phillips County in Colorado as well as several Nebraska counties including Chase, Perkins. and Keith counties. As much as 6.4 inches of daily precipitation was recorded in Phillips County with Nebraska's Chase County having daily values as high as 8.7 inches. Figure 2.1 - Phillips County Location Several state highways in Phillips County had to be closed due to standing water in various locations and a private railroad crossing near Amherst. CO was washed out as the existing culverts at that location were overwhelmed. Reports indicate one residence experienced moderate 1100d damage as the homeowner reported as mueh as 16 inches of standing water in her unlinished basement. Additionally. most of the county roads experienced some degree of 1100d damage (such as washouts and ponding) requiring thcm to bc closcd until repairs could be madc. Total costs to repair the damage in the county arc estimated in the range of $30,000 to $40,000 which docs not include any of the costs incurred by any of the private landowners in the area. Location and Descrintion Phiilips County is located in the northeast comer of the state along the Colorado- Nebraska border. According to the 2000 Census, the total county population is 4,480 with the majority of the population (over 50%) residing within the City of Holyoke which is al.so the county scat. ICON Engneer-ing, lr1c June 2007