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This data set is a complete digital hydrologic unit boundary layer of the Subbasin (8-digit) 4th level for the entire United States, clipped to the Northeast. A hydrologic unit (HU) is a drainage area delineated to nest a multi-level, hierarchical drainage system. Its boundaries are defined by a hydrographic and topographic criteria that delineate an area of land upstream from a specific point on a river, stream, or similar surfaces waters. An HU can accept surface water directly from upstream drainage areas, and indirectly from associated surface areas such as remnant, non-contributing, and diversions to form a drainage area with single or multiple outlet points. HUs are only synonymous with classic watersheds...
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Black bullhead (Ameiurus melas) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Slender sculpin (Cottus tenuis) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Spikedace (Meda fulgida) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Stimpson's goby (Sicyopterus stimpsoni) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Shorthead redhorse (Moxostoma macrolepidotum) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Pit-klamath brook lamprey (Lampetra lethophaga) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Mountain whitefish (Prosopium williamsoni) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Rainbow trout (Oncorhynchus mykiss) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Bull trout (Salvelinus confluentus) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Owens sucker (Catostomus fumeiventris) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Inland silverside (Menidia beryllina) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Leopard dace (Rhinichthys falcatus) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Finescale dace (Phoxinus neogaeus) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Desert sucker (Catostomus clarkii) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Santa ana sucker (Catostomus santaanae) status data created for the Western Division of the American Fisheries Society (WDAFS)
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Arkansas river shiner (Notropis girardi) status data created for the Western Division of the American Fisheries Society (WDAFS)


map background search result map search result map River lamprey (Lampetra ayresi) distribution and status by HUC8 Stimpson's goby (Sicyopterus stimpsoni) distribution and status by HUC8 Headwater livebearer / guatopote del mayo (Poeciliopsis monacha) distribution and status by HUC8 Finescale dace (Phoxinus neogaeus) distribution and status by HUC8 Colorado river cutthroat (Oncorhynchus clarkii pleuriticus) distribution and status by HUC8 Arkansas river shiner (Notropis girardi) distribution and status by HUC8 Santa ana sucker (Catostomus santaanae) distribution and status by HUC8 Desert sucker (Catostomus clarkii) distribution and status by HUC8 Black bullhead (Ameiurus melas) distribution and status by HUC8 Slender sculpin (Cottus tenuis) distribution and status by HUC8 Shorthead redhorse (Moxostoma macrolepidotum) distribution and status by HUC8 Leopard dace (Rhinichthys falcatus) distribution and status by HUC8 Inland silverside (Menidia beryllina) distribution and status by HUC8 Spikedace (Meda fulgida) distribution and status by HUC8 Rainbow trout (Oncorhynchus mykiss) distribution and status by HUC8 Pit-klamath brook lamprey (Lampetra lethophaga) distribution and status by HUC8 Owens sucker (Catostomus fumeiventris) distribution and status by HUC8 Mountain whitefish (Prosopium williamsoni) distribution and status by HUC8 Bull trout (Salvelinus confluentus) distribution and status by HUC8 Watershed Boundary Dataset, Hydrologic Unit Code 8 for the Northeast Arkansas river shiner (Notropis girardi) distribution and status by HUC8 Owens sucker (Catostomus fumeiventris) distribution and status by HUC8 Finescale dace (Phoxinus neogaeus) distribution and status by HUC8 Inland silverside (Menidia beryllina) distribution and status by HUC8 Santa ana sucker (Catostomus santaanae) distribution and status by HUC8 Slender sculpin (Cottus tenuis) distribution and status by HUC8 Pit-klamath brook lamprey (Lampetra lethophaga) distribution and status by HUC8 Spikedace (Meda fulgida) distribution and status by HUC8 Colorado river cutthroat (Oncorhynchus clarkii pleuriticus) distribution and status by HUC8 Desert sucker (Catostomus clarkii) distribution and status by HUC8 Shorthead redhorse (Moxostoma macrolepidotum) distribution and status by HUC8 Leopard dace (Rhinichthys falcatus) distribution and status by HUC8 Watershed Boundary Dataset, Hydrologic Unit Code 8 for the Northeast Black bullhead (Ameiurus melas) distribution and status by HUC8 Bull trout (Salvelinus confluentus) distribution and status by HUC8 Mountain whitefish (Prosopium williamsoni) distribution and status by HUC8 River lamprey (Lampetra ayresi) distribution and status by HUC8 Rainbow trout (Oncorhynchus mykiss) distribution and status by HUC8 Stimpson's goby (Sicyopterus stimpsoni) distribution and status by HUC8