Alluvial Boundary of California's Central Valley

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital dataset defines the extent of the alluvial deposits in the Central Valley of California and encompasses the contiguous Sacramento, San Joaquin, and Tulare Lake groundwater basins defined by California's Department of Water Resources. The boundary encompasses an approximate 50,000 square-kilometer region of California. The boundary was used to define the lateral boundary of the area simulated by the transient Central Valley Hydrologic Model [...]本数据集发布于2016年10月1日之前，彼时美国地质调查局（United States Geological Survey, USGS）规范科学数据审核、批准与发布的政策尚未生效，该政策的依据为《USGS调查手册第502.8章：基础科学实践：科学数据发布的审核与批准》。本数字数据集划定了加利福尼亚中央山谷冲积沉积的分布范围，涵盖由加利福尼亚州水资源部划定的萨克拉门托、圣华金与图莱湖连片地下水盆地。该边界覆盖加利福尼亚州约5万平方千米的区域，并被用于确定瞬态中央山谷水文模型模拟区域的侧向边界[...]

搜集汇总

背景与挑战

背景概述

该数据集定义了加州中央谷地冲积层的空间边界，覆盖萨克拉门托、圣华金和图莱尔湖地下水盆地，总面积约50,000平方公里。它用于支持中央谷地水文模型的横向边界设定，为水资源管理和研究提供基础地理数据。