Maryland Archived Submerged Aquatic Vegetation - SAV 1990

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/5切萨皮克湾沉水水生植被（Submerged Aquatic Vegetation, SAV）数据集采用1:24000比例尺黑白航空影像进行解译制图，以评估该海湾的水环境质量。所有沉水水生植被斑块均基于经过几何校正的航空影像完成解译，并依据植被覆盖百分比划分为四个密度等级。本数据集为马里兰州iMAP（MD iMAP）托管服务，更多相关信息可访问：https://imap.maryland.gov。要素服务链接：https://mdgeodata.md.gov/archive/rest/services/Biota/MD_ArchivedSubmergedAquaticVegetation/FeatureServer/5