Russian River Integrated Hydrologic Model (RRIHM): Model Grid Properties

The Russian River Watershed (RRW) covers about 1300 square miles (without Santa Rosa Plain) of urban, agricultural, and forested lands in northern Sonoma County and southern Mendocino County, California. Communities in the RRW depend on a combination of Russian River water and groundwater to meet their water-supply demands. Water is used primarily for agricultural irrigation, municipal and private wells supply, and commercial uses - such as for wineries and recreation. Annual rainfall in the RRW is highly variable, making it prone to droughts and flooding from atmospheric river events. In order to better understand surface-water and groundwater issues, the USGS is creating a Coupled Ground-Water and Surface-Water Flow Model (GSFLOW; Markstrom and others, 2008) of the RRW.This model will include climate, geology, surface-water, groundwater, and land-use data.

This data release is part of the larger Russian River Integrated Hydrologic Model (RRIHM) community of data releases (https://www.sciencebase.gov/catalog/item/62ffdd40d34ed6dc55924a4b). This is a shapefile of the Russian River Integrated Hydrologic Model (RRIHM) model grid. The attribute table specifies the active and inactive model grid cells in each of the three model layers. It also specifies the elevations of the top of the first model layer and the bottoms of all model layers. This information is used in the model to define the spatial extent and thickness of each of the model layers.

俄罗斯河流域（Russian River Watershed, RRW）占地约1300平方英里（不含圣罗莎平原），涵盖美国加利福尼亚州索诺玛县北部与门多西诺县南部的城市、农业与森林用地。该流域内的社区依靠俄罗斯河河水与地下水的联合供给满足用水需求，用水场景主要包括农业灌溉、市政与私人水井供水，以及酒庄、休闲娱乐等商业用途。本流域年降水量变异性极强，极易遭受大气河流事件引发的干旱与洪涝灾害。为更好地研究地表水与地下水相关问题，美国地质调查局（United States Geological Survey, USGS）正在构建俄罗斯河流域的地下水与地表水耦合流模型（Coupled Ground-Water and Surface-Water Flow Model, GSFLOW; Markstrom等，2008）。该模型将纳入气候、地质、地表水、地下水及土地利用数据。

本次数据发布隶属于俄罗斯河综合水文模型（Russian River Integrated Hydrologic Model, RRIHM）的更大规模数据发布集群，相关数据集集合可通过以下链接访问：https://www.sciencebase.gov/catalog/item/62ffdd40d34ed6dc55924a4b。本次提供的数据为俄罗斯河综合水文模型（RRIHM）的模型网格形状文件（shapefile）。其属性表明确了三个模型分层中各网格单元的激活与非激活状态，同时给出了首个模型分层顶部的高程，以及所有模型分层底部的高程。这些信息用于在模型中定义各模型分层的空间范围与厚度。