OC Rivers and Streams

BY USING THIS WEBSITE OR THE CONTENT THEREIN, YOU AGREE TO THE <u><a href='https://www.oakgov.com/open-data-terms'>TERMS OF USE</a></u><span style='font-family: &quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 17px;'>. </span><span style='font-family: &quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 17px;'><br /></span>Water Course is a spatial representation of hydrography features (Stream/River, Lake/Pond, Canal/Ditch, Swamp/Marsh, Open Drains, Closed Drains, Non Gravity Drains and Siphons). The linear natural waterway features were stereo compiled at a scale of 1:1200 using Oakland County's 2000 orthophotography as a reference. Drain feature locations were derived from conversion efforts from paper and digital construction plans.Key attributes include the Asset Maintainer, ReachCode and the GNISID as defined in the the National Hydrography Dataset (NHD). Note: NextDownID fields that equal -1 means there is no feature downstream.使用本网站或其内含内容，即视为您同意《<u><a href='https://www.oakgov.com/open-data-terms'>使用条款</a></u>》。<span style='font-family: &quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 17px;'> </span><span style='font-family: &quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 17px;'><br /></span>水系（Water Course）是对水文地理要素（溪流/河流、湖泊/池塘、运河/沟渠、沼泽/湿地、明渠排水沟、暗渠排水沟、非重力排水沟及虹吸管）的空间表达。本数据集的线性天然水道要素以奥克兰县2000年正射影像为参考基准，按1:1200比例尺采用立体测绘方式编制。排水沟渠要素的空间位置通过纸质与数字化施工图纸转换获取。其核心属性字段包括资产维护方（Asset Maintainer）、河段编码（ReachCode）以及国家水文数据集（National Hydrography Dataset）定义的地理名称信息系统标识符（GNISID）。备注：字段NextDownID取值为-1时，表示该要素下游无关联水文要素。