Maryland Archived Submerged Aquatic Vegetation - SAV 1992

The Chesapeake Bay SAV was mapped from 1:24,000 black and white aerial photography to assess water quality in the Bay. Each area of SAV was interpreted from the rectified photography and classified into one of four density classes by the percentage of cover. This is a MD iMAP hosted service. Find more information on https://imap.maryland.gov. Feature Service Link: https://mdgeodata.md.gov/archive/rest/services/Biota/MD_ArchivedSubmergedAquaticVegetation/FeatureServer/7本数据集依托1:24000比例尺黑白航空影像完成切萨皮克湾（Chesapeake Bay）沉水水生植被（Submerged Aquatic Vegetation, SAV）的填绘工作，用于评估该海湾的水环境质量。所有沉水水生植被斑块均通过经几何校正的航空影像解译获取，并依据覆盖百分比划分为4个密度等级之一。本服务由马里兰州iMAP（MD iMAP）托管发布。更多信息可访问：https://imap.maryland.gov。要素服务链接：https://mdgeodata.md.gov/archive/rest/services/Biota/MD_ArchivedSubmergedAquaticVegetation/FeatureServer/7