ArcMap 10.1、数字高程提取数字水系：[1]1
下载免费的dem数据
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/8435e5dde71190ef901806d7cd1b9d16fcfa60d3.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/c83d70cf3bc79f3de52d7038b9a1cd11738b29ed.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/242dd42a2834349bb3e5fa8dcaea15ce37d3bed3.jpg)
使用ArcMap 10.1
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/b17eca8065380cd754fd36e5a244ad34588281d3.jpg)
打开Arctool Box
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/d0c8a786c9177f3e7ff8680573cf3bc79e3d56ed.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/c2cec3fdfc039245ff7975078494a4c27c1e25ed.jpg)
Asscii to Raster
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/8d5494eef01f3a29df2b41c69a25bc315d607cd3.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/0824ab18972bd407080b47f578899e510eb309ed.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/4bed2e738bd4b31ce9f000b384d6277f9f2ff8ee.jpg)
设置Raster的坐标
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/0823dd54564e9258d1d612e69f82d158cdbf4ed3.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/bd3eb13533fa828baac109ebfe1f4134960a5ad3.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/a71ea8d3fd1f413487d59176261f95cad0c85ed3.jpg)
设置Layers的坐标
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/9e3df8dcd100baa1edced3b34410b912c9fc2ed3.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/728da9773912b31bd5a059218518367adbb4e1ee.jpg)
创建mask
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/8601a18b87d6277fecdea6302b381f30e824fcee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/10dfa9ec8a136327e50f563b928fa0ec09fac7dc.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/d01373f082025aafe8d0eac3f8edab64024f1ad3.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/63d9f2d3572c11df2d1d2b2b602762d0f603c2ee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/f703738da9773912d7c41169fb198618377ae2dc.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/8326cffc1e178a82e7deeba8f503738da877e8dc.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/3c6d55fbb2fb4316fed3ee7223a4462308f7d3ee.jpg)
大致确定所要研究流域的经纬度
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/d439b6003af33a8750a19412c55c10385243b5ee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/2e2eb9389b504fc23493240de6dde71191ef6dee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/00e93901213fb80ea11df5df35d12f2eb83894ee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/b3fb43166d224f4ab57be71b0af790529922d1dc.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/203fb80e7bec54e7ea0e8e16ba389b504ec26adc.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/c2cec3fdfc039245ff7a75078494a4c27c1e25ee.jpg)
在ArcMap上面点出流域出口附近点
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/1b4c510fd9f9d72acb868415d72a2834359bbbdc.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/6d81800a19d8bc3eb8c792c2818ba61ea9d345ee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/0df431adcbef76099be90d972ddda3cc7dd99edc.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/e4dde71190ef76c640306f239e16fdfaae5167dc.jpg)
选取研究区域
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/7a899e510fb30f240155780bcb95d143ac4b03ee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/50da81cb39dbb6fd6594712e0a24ab18962b37ee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/0eb30f2442a7d9338d67707bae4bd11372f001ee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/a50f4bfbfbedab6453bdd9c8f436afc378311eee.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/d000baa1cd11728b65f0182acbfcc3cec2fd2cdc.jpg)
![ArcMap 10.1、数字高程提取数字水系：[1]1](https://mtr-1.oss-cn-beijing.aliyuncs.com/qyblog/2018/11/ac4bd11373f08202115d053748fbfbedaa641bee.jpg)
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转载自：https://jingyan.baidu.com/article/6fb756ecb9bb76241858fbe6.html
gis,openlayers,leaflet,gis应用,geoai,geoserver,cesium,python,arcpy,arcmap,webgis，gis可视化
