LNWB Ch8 Water Management - industrial, residential, and commercial water use

The Lower Nooksack Subbasin is comprised of a variety of land and water uses both agricultural and nonagricultural. The water uses, described in this chapter include municipal, industrial, residential, and commercial. The following analysis of nonagricultural water use is divided into three sections: municipal/industrial, residential, and commercial/industrial.

The utilities that serve municipal/industrial customers in the Lower Nooksack Subbasin include the City of Bellingham, the City of Everson, the City of Ferndale, the City of Lynden, and the PUD #1 of Whatcom County. For these utilities, large municipal user water system records were obtained for years 2007 through 2011. Averages for this five year period were used in the model for water use, return flows, and interbasin transfers. The average annual diversion by the large utilities municipalities in our analysis totals nearly 25 cfs, 82% of which are transferred out of the Nooksack basin. The majority of that water serves Cherry Point industries; a small amount serves out-of-basin irrigators.

Residential, or domestic, water use was estimated according to population. Population and per capita water use rates are the foundation for calculating an average daily residential water use for each drainage in the Lower Nooksack Subbasin. 2010 Census geospatial census data were used to calculate the population for each drainage. The 2010 population for the Lower Nooksack Subbasin was 46,204, up 8,345 since the 2000 census. A per capita demand rate of 88 gallons per capita per day was agreed upon by the WRIA 1 Joint Board Staff Team to use as input along with the new population numbers. Seasonal demand factors were also determined to distribute monthly water use such that maximum demand occurred in the summer months and minimum demand in the winter.

Businesses and other operations that are not supplied water by a municipality are either served by a smaller public water system or are self-supplied. For commercial users not within the service area of the municipalities listed above, water use was estimated based on average use rates agreed on in 2003 with the WRIA 1 Water Quantity Technical Team. Commercial use was based on the type of operation identified in the Whatcom County Assessor records.

This resource is a subset of the Lower Nooksack Water Budget (LNWB) Collection Resource.

下诺克斯克次流域涵盖了多种土地利用和水资源利用方式，包括农业和非农业用途。本章所描述的水资源利用包括市政、工业、住宅和商业用途。对于非农业水资源利用的分析分为三个部分：市政/工业、住宅以及商业/工业。为服务下诺克斯克次流域的市政/工业客户的公共事业机构包括贝尔林厄姆市、埃弗森市、费尔内尔市、林登市以及惠康县公共事业局#1。对于这些公共事业机构，获取了2007年至2011年间的大型市政用户水系统记录。该五年期间的平均值被用于模型中关于水资源利用、回流量和流域间转移的计算。我们分析中大型市政公共事业机构的平均年调用水量总计约为25立方英尺每秒，其中82%的水被转移出诺克斯克次流域，大部分服务于樱桃点工业，一小部分服务于流域外的灌溉者。住宅或家庭用水根据人口进行估算。人口和人均用水率是计算下诺克斯克次流域每个排水区域平均每日住宅用水的基础。2010年人口普查的地理空间人口普查数据被用于计算每个排水区域的人口。下诺克斯克次流域的2010年人口为46,204人，自2000年人口普查以来增加了8,345人。WRIA 1联合董事会工作人员团队同意使用的人均需求率为每人每天88加仑，作为与新人口数据一同输入的参数。同时，还确定了季节性需求系数，以分配每月的水使用量，使得夏季月份的最高需求和冬季的最低需求相符。未由上述市政提供供水的商业和其他运营企业，要么由较小的公共供水系统提供服务，要么自行供水。对于不在上述市政服务区域内的商业用户，其用水量是根据2003年与WRIA 1水资源数量技术团队达成的平均使用率进行估算的。商业用水基于惠康县评估员记录中确定的操作类型。本资源是下诺克斯克次水资源预算（LNWB）资源集合的一个子集。