NOAA Fisheries West Coast Region, Santa Rosa, CA 20170101 vector digital data http://www.westcoast.fisheries.noaa.gov/maps_data/maps_and_gis_data.html https://www.wildlife.ca.gov/Data/BIOS ftp://ftp.wildlife.ca.gov/BDB/GIS/BIOS/Public_Datasets/2700_2799/ds2787.zip Information on estimating the quality and extent of historical habitat is needed for ongoing efforts to conserve and eventually recover protected populations of Pacific salmonids. Because georeferenced spatial data on habitat and fish distribution at the regional scale are lacking, we adapted methods of the Coastal Landscape Analysis and Modeling Study (CLAMS) to implement a GIS approach in modeling the intrinsic potential (IP) of stream reaches to support juvenile steelhead, coho, and chinook salmon. The IP model uses geomorphic and hydrological attributes (expressed as the weighted geometric mean of indices for mean annual discharge, channel gradient, and channel constraint) to estimate the latent potential of stream reaches to provide favorable habitat characteristics for spawning and rearing. Indices for the model are derived from a 10 m DEM and PRISM precipitation data. Thus, the model predicts patterns of relative productive potential expected in the absence of human disturbances, as related through the input data. To apply the model appropriately in California, we investigated the species-specific weighting functions (proposed by CLAMS) for coho and steelhead using values available in the literature. Also, because patterns in precipitation and runoff vary across latitudes, we appplied a linear regression model to gage station data to better estimate mean annual discharge from drainage area and precipitation.See Agrawal, A., R. Schick, E. P. Bjorkstedt, S. R.G., M. Goslin, B. C. Spence, T. Williams, and K. M. Burnett (2005). Predicting the potential for historical coho, Chinook and steelhead habitat in Northern California. NOAA Technical Memorandum NMFS-SWFSC-379.Spence, B., E. Bjorkstedt, S. Paddock, and L. Nanus (2012) Updates to Biological Viability Criteria for Threatened Steelhead Populations in the North-Central California Coast Recovery Domain. This data set provides an estimate to the spatial distribution of potential habitat for Northern California steelhead. NOTE: This data set supersedes that contained within NOAA_NCCC_Salmonid_IP_SWFSC.gdb. An incorrect natural barrier has been removed from Anderson Creek, tributary to the South Fork Eel River. Intrinsic potential measures the potential for development of favorable habitat characteristics as a function of the underlying geomorphic and hydrological attributes, as determined through a Digital Elevation Model (DEM) and mean annual precipitation grid. The model does not predict the actual distribution of "good'' habitat, but rather the potential for that habitat to occur, nor does the model predict abundance or productivity. Additionally, the model does not predict current conditions, but rather those patterns expected under pristine conditions as related through the input data. Thus, IP provides a tool for examining the historical distribution of habitat among and within watersheds, a proxy for population size and structure, and a useful template for examining the consequences of recent anthropogenic activity at landscape scales. -------------------------------------------- E. Mora & M. Jones 1/2008 Natural Barriers and Dams Attributes Added to Coverages. To incorprate both natural barriers and anthropogenic barriers (dams), attributes have been added to the coverages affected by these barriers. If a natural barrier(s) and/or dam(s) is present in the watershed, a NAT_BARR_RE and/or ANTHRO_BARR_RE attribute exists in the arc attribute table. All arcs downstream of the barrier are given a value of zero and all arcs upstream of the barrier are given the value of the FNODE of the first arc downstream of the barrier (essentially the node where the barrier is located). In July of 2012, NOAA Fisheries made revisions to their intrinsic potential model for steelhead in the Central California Coast and Northern California distinct population segments. These revisions involved modification of curves relating estimated mean annual flow and suitability. Details of these revisions and their influence on population delineation and viability criteria can be found in Spence, B.C., E.P. Bjorkstedt, S. Paddock, and L. Nanus. 2012. Updates to biological viability criteria for threatened steelhead populations in the North-Central California Coast Recovery Domain. (Revised 2 July 2012). NMFS Southwest Fisheries Sciece Center, Fisheries Ecology Division, Santa Cruz, CA. Versions of the steelhead IP model that pre-date these revisions are incorrect and should be discarded. In September 2014, NOAA Fisheries Southwest Fisheries Science Center collaborated with NOAA Fisheries West Region to create a species-specific data files of intrinsic potential for four ESUs and DPSs within the North-Central California Coast Recovery Domain: California Coastal Chinook salmon, Central California Coast coho salmon, Northern California Steelhead, and Central California Coast steelhead. These data files differ from their predecessors in two important respects. First, stream reaches with IP values of zero that occur upstream of the upper extent of the predicted distribution have been removed to reduce file size and increase portability. Second, areas upstream of long-standing natural barriers to fish passage have been removed from these files as well. This eliminates the need to query based on barrier attributes in order to obtain the extent of intrinsic. ST_IP_CURVE12_RE: use for mapping - shows the quality of the IP (from 0.0 to 1.0). STIPINT_RE = Integrated IP: use if comparing to other watersheds. The area over which IP was calculated is taken into account (values are > 1). To get total IP miles for a population, sum all the STIPINT_RE records in that population. Complete None planned -124.465450 -122.710852 41.485552 38.487003 None suitability habitat North Central California Coast intrinsic potential NCCC steelhead salmon ISO 19115 Topic Categories environment inlandWaters oceans biota None California None None NOAA Fisheries West Coast Region Charleen Gavette NOAA Fisheries West Coast Region, Santa Rosa, CA Charleen Gavette physical

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Santa Rosa CA 95404 charleen.gavette@noaa.gov Data originally created by the NOAA Fisheries Southwest Fisheries Science Center, Santa Cruz, CA. Compiled into one data set by NOAA Fisheries West Coast Region, Santa Rosa, CA. Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.1.7333 Vector String 132231 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds2787 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. Name Population Name STIPINT_RE Total distance weighted (in meters) IP for steelhead (12% gradient threshold) CG_ST_CURVE12 Steelhead suitability index for gradient using a 12% gradient threshold SVC_STCURVE12 Steelhead suitability index for valley width using a 12% valley constraint threshold SC_ST_CURVE12_RE Steelhead suitability index for discharge using a 12% gradient threshold ST_IP_CURVE12_RE IP score for steelhead using a 12% gradient threshold MNANPRC_MM Mean annual precipitation depth in millimeters, averaged over the drainage area to the downstream end of the reach. MEANANNCFS Mean annual discharge for the downstream end of the reach based on a regression equation for western Oregon. MEANANNCMS MEANANNCFS converted to cubic meters/second. TEMPERATURE Mean August air temperature (in 1/10 degrees Celsius) acquired from a PRISM temperature grid. ORDER_ Strahler stream order. Note that stream order is a function of where the channel head is defined. CALMAX_GRAD_D MX_GRAD_DPCT ** .756656 * 1.259 CALMEAN_GRAD MEAN_GRADPCT ** .756656 * 1.259 WDTHAVEDEV Average deviation of valley width through the reach. MEAN_GRAD Mean gradient through the reach (vertical change/horizontal length). MEAN_GRADPCT MEAN_GRAD * 100 MAX_GRAD_D Maximum gradient encountered downstream through the network. MX_GRAD_DPCT MAX_GRAD_D * 100 MIN_GRAD Minimum gradient within the reach (at the scale of DEM pixels). MAX_GRAD Maximum gradient within the reach. AVEDEVGRAD Average deviation of gradient through the reach. ANTHRO_BARR_RE Anthropogenic Barrier; 0 = below barrier, 1= above barrier VALWIDTH_L Valley width in meters on the left side of the channel (facing downstream). VALWIDTH_R Valley width in meters on the right side of the channel. WIDTH_MIN Minimum valley width within the reach. WIDTH_MAX Maximum valley width within the reach. AREA__KM2_ Drainage area in square kilometers to the downstream end of the reach LLID Each channel is assigned a unique identifier, based on the latitude and longitude at the mouth. At channel junctions, the identifier is assigned to the channel with the largest drainage area and the smaller channel is assigned a new LLID. LLIDs are calculated using pixel corners to differentiate cases where two tributaries enter the mainstem at a single DEM node. ID Each channel is assigned a unique identifier, based on the latitude and longitude at the mouth. LENGTH Length of feature in internal units (meters). FROM_DIST The distance from the channel mouth to the downstream end of the reach (in meters). TO_DIST The distance from the channel mouth to the upstream end of the reach (in meters). VALLEY_W VALWIDTH_L + VALWIDTH_R SACW Active channel width: 2.19108 + 1.32366 * MEANANNCFS ** .5 SVWI Valley-width-index: VALLEY_W / SACW AZIMTH_DEG Average flow direction for the reach in degrees azimuth. RPOLY_ Internal node number for the right polygon. LPOLY_ Internal node number for the left polygon. TNODE_ Internal node number for the end of an arc (to-node). FNODE_ Internal node number for the beginning of an arc (from-node). Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. 20180816 NOAA Fisheries West Coast Region Charleen Gavette FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time