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CHAPTER 5. CITY OF ROSLYN ANNEX <br />2 <br />mines. At one time, 24 ethnic groups and nationalities were living in Roslyn. Today, many of <br />the original families continue to make Roslyn their home. <br />– Climate - The climate of Roslyn is a mountainous climate that can be quite variable. Summers <br />are generally warm and sunny; the months of July, August and September are usually <br />characteristic of this season. The average temperatures in the high 70s to the mid-80s with a <br />highest recorded temperature of 105ºF in 1967. There is little to no rainfall during these months, <br />and the danger of wildfire is extremely high. Winter is typically at its peak from November <br />through February and typically has temperatures ranging from the mid-teens to mid-30; the <br />lowest recorded temperature was –33ºF in 1950. Most of the precipitation falls during these <br />months in the form of snow with heavy accumulations. Average snowfall for the City of Roslyn <br />is 78.5 inches per year. This is also the period when Roslyn experiences flooding events, when <br />there is a rain-on-snow event. This occurs when warm moist air from the Pacific is channeled <br />into the area, often leading to extended periods of rain. <br />– Governing Body Format - Roslyn is governed by an elected mayor/council form of <br />government with seven council seats. The City is run through the administrative office. Current <br />departments include Administrative/Finance, Planning, Public Works, and Volunteer Fire <br />Department. The Police Department is a part of a regional partnership between Roslyn, Cle <br />Elum, and the Town of South Cle Elum. <br /> The City operates a water system managed through the Public Works Department. The City <br />provides water to the City of Roslyn, Kittitas Water District #2 (Ronald), the Roslyn/Cle Elum <br />School District, and other homes and businesses south of the City. The water source is Domerie <br />Creek, located approximately 5-½ miles from Roslyn on the east side of the Cle Elum River. <br />Water is gravity fed from the source to a slow sand filtration treatment plant located outside of <br />Ronald, where it continues to a 1 million gallon reservoir above the Roslyn historic cemeteries. <br /> Sanitary services are provided by the City of Roslyn in its transmission facilities and a Regional <br />Wastewater Treatment plant located in and owned by the City of Cle Elum. The Kittitas Water <br />District #2 (Ronald) is connected to the transmission system at Runje Field. Sewage flows via <br />gravity toward Roslyn’s old sewage lagoons where flow data is captured as it continues towards <br />Cle Elum. One 5-acre lagoon is maintained as a stormwater attenuation facility during times of <br />heavy rain and flood events. <br /> Fire service is provided by the Roslyn Fire Department, which has a 100-percent volunteer <br />staff and one fire station. <br />– Development Trends - There are significant impacts due to increase development pressures <br />outside of the city limits. Little to no regulation of grade and fill through the county and <br />increased impervious surfaces have created increased stormwater runoff that causes the City’s <br />stormwater system to flood on a regular basis. The City of Roslyn is currently working with <br />engineers to complete a stormwater study and create a stormwater utility to help and protect <br />public and private property from such incidences. <br />5.3. JURISDICTION-SPECIFIC NATURAL HAZARD EVENT HISTORY <br />Table 5-1 lists all past occurrences of natural hazards in the county. Repetitive loss records are as follows: <br />– Number of FEMA Identified Repetitive Flood Loss Properties: 0 <br />– Number of Repetitive Flood Loss Properties that have been mitigated: 0 <br />5.4. HAZARD RISK RANKING <br />Table 5-2 presents the ranking of the hazards of concern.