Filters: Tags: Northern Great Basin (X)
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NOAA total mean monthly snow depth data represents the mean monthly total accumulation derived from 4km raster data. It does not incorporate melting, compression or sublimation. The data scoring categories were based on snow depth data categories, with snow depth greater than 20.4 inches considered low quality, 10.4 to 20.4 inches scored as moderate quality and less than 10.4 inches considered preferred.
State PPH datasets from Oregon, Nevada, California, Utah and Idaho were merged and clipped to the ecoregion and converted to a raster. The resulting raster PPH was used as a mask for spatial operations for greater sage-grouse PPH.
This dataset is a record of fish distribution and activity for WHITE STURGEON contained in the StreamNet database. This feature class was created based on linear event data extracted from the StreamNet database on January 12, 2012. Distribution is based upon the best professional judgement of local fish biologists, in the Pacific Northwest Region (Oregon, Washington, Idaho and Montana). These data were collected by biologists at the state fish & wildlife agencies of Washington (WDFW), Oregon (ODFW), Idaho (IDFG) and Montana (MFWP). Data were then compiled by StreamNet staff into paper maps or event tables at the state level. These event tables were submitted to the StreamNet regional staff at Pacific States Marine...
The dataset contains a time series (2000-2010) of cheatgrass percent cover maps covering the western and central areas of the northern Great Basin.This dataset used in the Northern Great Basin Rapid Ecoregional Assessment by BLM. No changes were made to the data but the dataset was clipped to the ecoregion boundary.
Vegetation cover was extracted from the Landfire Existing Vegetation Height dataset.> 100cm vegetation height = good60 - 100cm vegetation height = moderate
Using temperature range derived in earlier datasets for the range of Lahontan cutthroat trout in the ecoregion, the following assumptions are made of a future climate scenario.Suitable is Marginal is current Mean July Air Temp + 1 Standard Deviation - Max July Air Temp (30.3 - 31.6*C)Unsuitable is > current Max July Air Temp (> 31.6*C)Results are rolled up to an analysis unit.
Groundwater monitoring wells were extracted to show the current condition of groundwater levels in the NGB based on historic normals.
USFS aquatic invasives database was used to count the number of detections within each analysis unit for the combined range of the bull trout.
Road features were identified using TIGER line data and those features mapped as freeways, secondary roads and local roads were selected. A proximity analysis was performed and then assigned scores based on the metric values that included ratings where distance from roads greater than 1000 meters was scored as preferred, 300 - 1,000 meters was scored as moderate and less than 300 meters was considered lower quality.
Impervious areas extracted from National Land Classification Dataset Impervious Areas was used to determine the proximity of impervious areas to analysis units containing Columbia spotted frog modeled suitable habitat. 5-10% of analysis unit containing impervious areas = moderate> 10% of analysis unit containing impervious areas= lower quality
Foraging habitat extent was derived from National Hydrological Dataset data to determine the extent of Bald eagle potential suitable habitat. The quality of a HUC in relation to habitat was defined as good (3), fair (2), or poor (1). The score indicates the threat level for each attribute. A low score indicates a low threat, a medium score indicates a medium threat, and a high score indicates a high threat to the species. The values for each score were characterized in relation to foraging habitat by open water edge (lake, reservoir); low-gradient perennial stream = good, other aquatic feature (high gradient stream, wetland, spring; non-perennial stream) = fair, and other NHD Type = poor.
USFS aquatic invasives database was used to count the number of detections within each analysis unit for the white sturgeon range.
The analysis units intersecting with the range of the species was extracted to use in other process models so that the entire range was analyzed.
This spatial data contains OHV designations for the State of Idaho.
This dataset was developed by the USGS for use in regional climate simulation analyses. These data were applied in the BLM REA analysis for the NGB ecoregion. For more information pertaining to these data and climate modeling, please refer to http://regclim.coas.oregonstate.edu/.
PRISM July temperature from the 1980 - 2010 800m normals maximum temperature (TMAX) was extracted for the ecoregion and increased 3 degrees C to model future climate change scenario based on Haak et al. 2010 methodology. The increase temperature was used to determine if the increase in July temperature would increase water temperatures outside of the species tolerance.
Groundwater condition, dam regulated watersheds, natural vegetation, 303(d) listed waters and aquatic invasives were ranked 1 - 3 (3 highest quality) and summed together using raster calculator. The combined sum represents the overall quality of perennial streams in the HUC 12. This layer was converted to a raster to use as an input for coldwater fish assemblage cumulative indicator.
Agricultural land use/vegetation codes were extracted from Landfire, NWRegap and SW ReGap. These layers were mosaiced and reclassed to single value in a mosaic so they could be used as a general footprint of agricultural land use or lumped together with other development features.
Using the results of the flood risk due to change in winter temperature change, areas with low winter precipitation are mosaiced onto the flood risk to show areas that have the potential for flood risk and areas with low precipitation that are precluded from consideration for flood risk.
Agriculture and Urban land uses were extracted from Landfire VCC and urban areas were mosaiced with TIGER roads to determine the percentage of those land uses with the riparian corridor.
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