Aquifer framework datasets used to represent the Ada-Vamoosa aquifer, Oklahoma

The Ada-Vamoosa aquifer resides in the Central Lowland Physiographic Province in east-central Oklahoma and ends at the Kansas State line. The aquifer underlies an area of about 2,300 square miles. The aquifer consists mainly of layers of fine to coarse-grained sandstone irregularly interbedded with shale and limestone. The rocks are in the Ada and the Vamoosa Groups are Pennsylvanian age. The maximum thickness of the aquifer is about 900 feet. The aquifer is productive where conditions are unconfined and acts as the primary water source for several towns in the area (HA 730-E).

This product provides source data for the Ada-Vamoosa aquifer framework, including: 
Georeferenced images: 
1. i_28ADAVMS_top.tif: Digitized figure of altitude contour lines representing the top of the Ada-Vamoosa aquifer. The original figure was from Circular 87, Plate 3.
2. i_28ADAVMS_bot.tif: Digitized figure of altitude contour lines representing the bottom of the Ada-Vamoosa aquifer. The original figure was from Circular 87, Plate 3.

Extent shapefiles: 
1. p_28ADAVMS.shp: Polygon shapefile containing the areal extent of the Ada-Vamoosa aquifer (Ada-Vamoosa_AqExtent). The extent file contains no aquifer subunits.

Contour line shapefiles: 
1. c_28ADAVMS_top.shp: Contour line dataset containing altitude values, in feet reference to National Geodetic Vertical Datum of 1929 (NGVD29), across the top of the Ada-Vamoosa aquifer. These data were used to create the ra_28ADAVMS_top.tif raster dataset.
2. c_28ADAVMS_bot.shp: Contour line dataset containing altitude values, in feet reference to NGVD29, across the bottom of the Ada-Vamoosa aquifer. These data were used to create the ra_28ADAVMS_bot.tif raster dataset.

Altitude raster files: 
1. ra_28ADAVMS_top.tif: Altitude raster dataset of the top of the Ada-Vamoosa aquifer.  The altitude values are in meters reference to North American Vertical Datum of 1988 (NAVD88) vertical datum. This raster was interpolated from the c_28ADAVMS_top.shp dataset.
2. ra_28ADAVMS_bot.tif: Altitude raster dataset of the bottom of the Ada-Vamoosa aquifer.  The altitude values are in meters reference to NAVD88 vertical datum. This raster was interpolated from the c_28ADAVMS_bot.shp dataset.

Depth raster files: 
1. rd_28ADAVMS_top.tif: Depth raster dataset of the top of the Ada-Vamoosa aquifer.  The depth values are in meters below land surface (NED, 100-meter).
2. rd_28ADAVMS_bot.tif: Depth raster dataset of the bottom of the Ada-Vamoosa aquifer.  The depth values are in meters below land surface (NED, 100-meter).

阿达-瓦穆萨含水层（Ada-Vamoosa aquifer）坐落于俄克拉荷马州中东部的中央低地地貌省，其范围终止于堪萨斯州界。该含水层覆盖面积约2300平方英里，主要由细粒至粗粒砂岩与页岩、石灰岩不规则互层构成。其岩层隶属于宾夕法尼亚纪的阿达群与瓦穆萨群，含水层最大厚度约900英尺。在无压水文条件下该含水层具备供水能力，是区域内多个城镇的主要水源（HA 730-E）。

本数据集提供阿达-瓦穆萨含水层框架的源数据，具体包括：
1. 地理参考影像：
1. i_28ADAVMS_top.tif：阿达-瓦穆萨含水层顶面海拔等值线数字化图件，原图源自《Circular 87》图版3。
2. i_28ADAVMS_bot.tif：阿达-瓦穆萨含水层底面海拔等值线数字化图件，原图源自《Circular 87》图版3。

2. 范围矢量形状文件：
1. p_28ADAVMS.shp：包含阿达-瓦穆萨含水层面状分布范围的多边形形状文件（Ada-Vamoosa_AqExtent），该范围文件未包含含水层亚单元。

3. 等值线矢量形状文件：
1. c_28ADAVMS_top.shp：阿达-瓦穆萨含水层顶面的海拔等值线数据集，海拔单位为英尺，基准面为1929年国家大地垂直基准面（National Geodetic Vertical Datum of 1929, NGVD29），该数据用于生成ra_28ADAVMS_top.tif栅格数据集。
2. c_28ADAVMS_bot.shp：阿达-瓦穆萨含水层底面的海拔等值线数据集，海拔单位为英尺，基准面为NGVD29，该数据用于生成ra_28ADAVMS_bot.tif栅格数据集。

4. 海拔栅格文件：
1. ra_28ADAVMS_top.tif：阿达-瓦穆萨含水层顶面海拔栅格数据集，海拔单位为米，基准面为1988年北美垂直基准面（North American Vertical Datum of 1988, NAVD88），该栅格由c_28ADAVMS_top.shp数据集插值生成。
2. ra_28ADAVMS_bot.tif：阿达-瓦穆萨含水层底面海拔栅格数据集，海拔单位为米，基准面为NAVD88，该栅格由c_28ADAVMS_bot.shp数据集插值生成。

5. 深度栅格文件：
1. rd_28ADAVMS_top.tif：阿达-瓦穆萨含水层顶面深度栅格数据集，深度值为地表以下米数（NED, 100-meter）。
2. rd_28ADAVMS_bot.tif：阿达-瓦穆萨含水层底面深度栅格数据集，深度值为地表以下米数（NED, 100-meter）。