Drought Vulnerability Analysis


Drought Vulnerability Analysis :

As Kent's population and industries continue to grow so does the demand for water. The Kent water system is supplied by multiple groundwater sources located throughout the water service area. These sources of supply are served by aquifers that underlie the Green and Cedar River drainage basins and the water service area and are combined with seasonal water purchases from the Tacoma Second Supply Project (SSP) to meet the water demands. As usage approaches the limit of available water, any decrease in the normal flow will tend to exacerbate past problems. A lengthy drought combined with extremely hot weather would create cause for concern. Severe problems could conceivably occur in the event of water shortages requiring rationing. Many businesses, small and large alike are high water consumers. These businesses require large amounts of water daily to continue in operation. A severe drought creating water rationing could cause these businesses to be forced to cut back on manufacturing, or even close, until adequate water was available. The loss to manufactures and sellers of recreational equipment and related activities would impact the local recreation and tourism industry. Financial losses and the layoff of workers would result. The farming and agricultural community would face financial hardship if they had to rely solely on the municipal water supply to irrigate their crops and provide water for their animals. Grass and brush fires would pose a threat not only to farm crops and wildlife, but also to homes and businesses near susceptible wild land/urban interface areas due to the reduced moisture content of the vegetation contributing to rapid fire spread. There may also be reduced water availability to fight fires. A major urban fire requiring excessive use of water resources could have significant impact on local water supplies during a drought. Conclusions: The most significant vulnerability in Kent from a prolonged period of dry weather is the elevation of the wild land-urban interface fire threat on the west and most notably east hill geographic areas. Because the Kent area is serviced by a commercial water system supplied by City owned wells and is backed with subsequent inner ties, it is unlikely that a moderate drought would create an economic concern for the area. Such an event in the Kent area would not likely be a threat to human life

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