Maryland Archived Submerged Aquatic Vegetation - SAV 1989

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/4本数据集通过1:24000比例尺黑白航空摄影完成切萨皮克湾沉水水生植被（Submerged Aquatic Vegetation, SAV）的测绘工作，以评估该海湾的水质状况。所有沉水水生植被区域均通过经几何校正的航空摄影解译获取，并依据覆盖占比被划分为四个密度等级之一。本数据集为马里兰州iMAP托管服务，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/4