Sam Friedman 20230531 vector digital data Portland, OR Oregon Fish and Wildlife Office https://fws.maps.arcgis.com/home/item.html?id=44ab21a0cbd849c1a1b7382588c8bb30 https://iris.fws.gov/APPS/ServCat/Reference/Profile/178589 This is a combined feature class from 158 individual line feature classes derived from flow accumulation rasters for each of the analysis area tiles. Stream networks were generated using the ArcGIS Spatial Analyst Derive Continuous Flow tool against each DEM tile, converting to stream rasters with Strahler Order network segment values, then clipping the result to analysis area polygons to derive stream network network raster with a minimum segment watershed size of 2500 sq ft. The stream raster for each tile was exported to a vector Line feature class, combined into a single feature class. Each segment was provided with a Mounded Landform polygon ID, and statistics for segment length and total streamline length were computed and conflated to HydroAnalysis table fields for analyzing stream statistics. Modeled potential runoff surface flow ephemeral "stream" network for mapped vernal pool / vernal wetland habitat areas within the Mounded Landform feature class. Surface flows were modeled on the topographic bare earth surface high-resolution DEM at 1' resolution and processed in ArcGIS Spatial Analyst to delineate runoff drainage networks. 20221001 07:00:00.000+00:00 20231001 06:59:59.999+00:00 completed notPlanned Rogue River Valley in southwestern Oregon. -123.02718 -122.57059 42.66295 42.19589 None streams lidar Oregon Fish and Wildlife Office OFWO US Fish and Wildlife Service USFWS Rogue Valley Rogue River Valley ISO 19115 Topic Category inlandWaters None This dataset is not intended for regulatory purposes and that the appropriate Federal and State agencies need to be contacted for project clearance requirements. For further information please contactsam_friedman@fws.gov. Sam Friedman Oregon Fish and Wildlife Office Botanist physical

777 NW Garden Valley Boulevard

Roseburg OR 97471 541-957-3478 sam_friedman@fws.gov U.S. Fish and Widlife Service, Columbia-Pacific Northwest Region, Ecological Services, Oregon Fish and Wildlife Office; Keith Perchemlides, Groundtruth Ecological; Cam Patterson, CC Patterson and Associates Esri ArcGIS 13.1.0.41833 See the report Mapping and Assessment of Mounded Vernal Pool Habitat in the Rogue River Valley of Southwest Oregon (https://iris.fws.gov/APPS/ServCat/Reference/Profile/178610) for full methodology related to the resource. See the report Mapping and Assessment of Mounded Vernal Pool Habitat in the Rogue River Valley of Southwest Oregon (https://iris.fws.gov/APPS/ServCat/Reference/Profile/178610) for full methodology related to the resource. See the report Mapping and Assessment of Mounded Vernal Pool Habitat in the Rogue River Valley of Southwest Oregon (https://iris.fws.gov/APPS/ServCat/Reference/Profile/178610) for full methodology related to the resource. 70ca7268-90d3-413c-abe6-9d9a292aaebe See the report Mapping and Assessment of Mounded Vernal Pool Habitat in the Rogue River Valley of Southwest Oregon (https://iris.fws.gov/APPS/ServCat/Reference/Profile/178610) for full methodology related to the resource. For a clearer, more precise view of the relevant topography, and to enable modeling of hydrologic features, we generated high-resolution surface topography coverage for all locations with mounded landform. Within and surrounding our mapped landform polygons, we reprocessed the raw DOGAMI lidar point-cloud data to a 1-foot pixel resolution digital elevation model (DEM). Viewed as hillshade topography in GIS, the high-resolution DEM allowed us to refine our habitat polygons and assessment of landform condition and geomorphology to greater accuracy. We used this high-resolution lidar coverage and ArcGIS Spatial Analyst tools to model surface hydrology within all mounded landform habitat polygons. Potential vernal pools were modeled as undrained topographic depressions, or basins, in the landform with a depth of at least 0.5 inch and a minimum area of 50 ft2. We manually reviewed the modeling results to remove artificial features such as irrigation ditches or ponds that obviously did not qualify as potential vernal pools – but retaining disturbed or altered basins along with more intact pools. For all basins, we calculated topography-based hydrologic metrics in GIS, resulting in full coverage of potential vernal pools as polygons with attributes of depth, area, volume, and contributing drainage area. We also modeled runoff surface flow patterns within our landform polygons to map and quantify the network of ephemeral streams interconnecting the vernal pool basins, and to compute contributing watershed values for basins. The overall result of this hydro-topographical analysis was to map the physical potential for vernal pool habitat within each mounded landform polygon and illustrate the stream network patterns of the surface drainage tying those pools together. Because natural vernal pool habitat (especially on the Agate-Winlow soils) exhibits a characteristic pattern of drainage network and pool basins, these models provide a basis for evaluating habitat quality and disturbance as well as estimating the amount and condition of vernal habitat. We summarized the pool basin and ephemeral stream data to the mapped habitat polygons to quantify this hydrologic potential as attributes of pool density, average size, depth, and volume. Because of natural slope and drainage, or due to anthropogenic impacts, some mounded landform areas have little or no vernal pool basins present, but still support ephemeral stream networks and the potential for vernal wetland habitat. Vector vector Streams Line feature class of potential ephemeral streams as surface drainage flows modeled from the lidar 1-foot pixel DEM within mounded landform polygons. Stream segments meet a minimum drainage catchment size of 2500 ft2 and are clipped to the extent of the mounded landform polygons. OBJECTID Sequential unique whole numbers that are automatically generated. ESRI Pool_ID Unique identifier for each undrained sink in the lidar DEM qualifying as potential vernal pool habitat according to size, substrate, and depth criteria. USFWS Str_Order Strahler magnitude stream order indicating the relative number of tributaries. Used to symbolize stream size in a network map. USFWS Stream_ID Unique identifier for each segment in a stream network. USFWS Shape_Length Length of feature in internal units. ESRI Oregon Fish and Wildlife Office mailing

2600 Southeast 98th Avenue Suite 100

Portland OR 97266-1398 503-231-6179 Monday - Thursday 8:00 am - 4:00 pm 20231129 Zachary Cravens Oregon Fish and Wildlife Office GIS Specialist physical

2600 Southeast 98th Avenue Suite 100

Portland OR 97266-1398 503-231-6912 zachary_cravens@fws.gov Content Standard for Digital Geospatial Metadata with Biological Data Profile FGDC-STD-001.1-1999