Datasets Activity Stream Suggest Data About Submit Include Sub-Organizations Order by Relevance Name Ascending Name Descending Last Modified Popular Go 1 dataset found (6 resources) Tags: Rivers Strahler Filter Results Rivers Strahler Ranking The first segment of a stream is a 1st order stream. When two 1st order streams merge the next segment becomes a 2nd order stream. When two 2nd order streams merge it becomes a... 1 KML 1 JSON 1 HTML 1 SHP 1 GeoJSON 1 CSV