Global River Obstruction Database v1.1

<p>GROD v1.1 (filename: GROD_v1.1.csv), or Global River Obstruction Database version 1.1, contains 30549&nbsp;manually identified human-made structures that obstructing river longitudinal flow. Obstructions have been identified on Google Earth Engine satellite map for all rivers mapped in the Global River Widths from Landsat (<a href="https://zenodo.org/record/1297434#.YU0rAGZKhGo">GRWL</a>) database. Each obstruction has assigned one of the six types&mdash;Dam, Lock, Low head dam, Channel dam, Partial dam 1, Partial dam 2. Details of the mapping process and data quality can be found in the following publication:</p> <p>Yang, X., Pavelsky, T.M., Ross, M.R.V., Januchowski-Hartley, S.R., Dolan,W., Altenau, E.H., Belanger, M., Byron, D.K., Durand, M.T., Dusen, I.V., Galit, H., Jorissen, M., Langhorst, T., Lawton, E., Lynch, R., Mcquillan, K.A., Pawar, S., Whittemore, A., in revision. Mapping ow-obstructing structures on global rivers. Water Resources Research.</p> <p>The single csv file contain the version 1 of GROD that accompanying the above-mentioned publication. It contains 7 columns:</p> <p><strong>grod_id: </strong>unique identifier (character)</p> <p><strong>type:</strong> obstruction type (character)</p> <p><strong>lon:</strong> longitude in decimal degrees (float)</p> <p><strong>lat:</strong> latitude in decimal degrees (float)</p> <p><strong>sword_reach_id¹: </strong>nearest sword reach id (character)</p> <p><strong>distance_to_sword: </strong>distance to the nearest sword reach (float)</p> <p>&nbsp;</p> <p><strong>Note:</strong></p> <p><strong>1. </strong>sword, or SWOT River Database (https://zenodo.org/record/3898570#.YU0urWZKhGo), is an improved version of GRWL with better topology. Majority of the GROD obstructions (N=30502) has been matched with the closest SWORD reach.&nbsp;The remaining 16 obstructions were further than 10km away from any SWORD reach and&nbsp;were not matched to SWORD.&nbsp;</p> <p><strong>2.</strong> GROD, along with many other large scale river obstructions databases, will be hosted on Global Dam Watch website (http://globaldamwatch.org/).</p>