Steven Sobieszczyk 2011 vector digital data http://water.usgs.gov/lookup/getspatial?fannoCk_fldpln Fanno Creek is a tributary to the Tualatin River and flows though parts of the southwest Portland metropolitan area. The stream is heavily influenced by urban runoff and shows characteristic flashy streamflow and poor water quality commonly associated with urban streams. This data set represents the geomorphic floodplain as derived from light detection and ranging (LiDAR) data and aerial photographic imagery. The floodplain represents current conditions including both anthropogenic alterations and natural historic floodplain features. The floodplain dataset is divided into 13 reach segments and attributed with corresponding organic material load estimates for each reach. This data set was developed as part of an USGS carbon study that examines sources of carbon-rich organic matter along Fanno Creek. In order to quantify how much material enters the stream, the different river and floodplain features needed to be defined. In this data set the geomorphic floodplain was defined in order to represent the extent where vegetation (organic matter, such as leaf litter) can enter the Fanno Creek system. None. 2009 ground condition Complete None planned -129.351779 -109.448056 55.265926 39.745375 None floodplain creek geomorphology USGS stream reaches organic matter biomass land cover inlandWaters None Fanno Creek Tualatin River Oregon None. None. U.S. Geological Survey Steven Sobieszczyk Hydrologist mailing and physical address

2130 SW 5th Ave

Portland OR 97201 USA 1-503-251-3208 1-503-251-3470 ssobie@usgs.gov http://water.usgs.gov/GIS/browse/fannoCk_fldpln.gif Illustration of geomorphic floodplain for Fanno Creek, Oregon GIF The U.S. Geological Survey should be acknowledged as the data source in products derived from these data. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000 U.S. Geological Survey 2011 vector digital data http://water.usgs.gov/lookup/getspatial?fannoCk_active_chnl U.S. Geological Survey 2011 raster digital data http://water.usgs.gov/lookup/getspatial?fannoCk_lndcvr_09 U.S. Geological Survey 2011 raster digital data http://water.usgs.gov/lookup/getspatial?fannoCk_ndvi_09 U.S. Geological Survey 2011 vector digital data http://water.usgs.gov/lookup/getspatial?fannoCk_solid_samples U.S. Geological Survey 2011 vector digital data http://water.usgs.gov/lookup/getspatial?fannoCk_stm_cntr_ln U.S. Geological Survey 2011 vector digital data http://water.usgs.gov/lookup/getspatial?fannoCk_water_samples Floodplain dimension values are dependent on interpretation of floodplain boundaries. Organic matter estimates are reported in broad, order of magnitude-scale values. Data are topologically correct in ArcGIS. Data are complete. The geologic floodplain is defined as the geomorphic surface that is actively accumulating sediment through occasional overbank deposition. Areas within the geologic floodplain are considered to be formed during the recent (Holocene-epoch) climatic regime. This mapping is not intended to include Pleistocene surficial deposits. Data set manually derived from 1-meter resolution light detection and ranging (LiDAR) data and 0.5-meter resolution aerial imagery. This floodplain delineation includes occasional topographic highs that are well above the local maximum floodplain elevation. This mapping is a reference frame for geomorphic analyses, and should not be interpreted as a floodplain hazard map or delineation of actual historical flood boundaries. This product should not be used for planning or insurance purposes. The floodplain was interpreted and digitized at a scale of 1:1,000.NAIP imagery from 2009 was used to verify that the mapping was reasonable. Mapped accuracy +/- 5 meters. Watershed Sciences, Inc. Oregon Department of Geology and Mineral Industries 2009 raster digital data http://www.oregongeology.org/sub/projects/olc/default.htm hard drive 2009 ground condition LiDAR1 Oregon Department of Geology and Mineral Industries and Watershed Sciences, Inc., 2009, LiDAR of Western Oregon and the Willamette Valley: digital data set courtesy of Ian Madin, available via external hard drive [digital data set] Watershed Sciences, Inc. Oregon Department of Geology and Mineral Industries 2009 raster digital data http://www.oregongeology.org/sub/projects/olc/default.htm hard drive 2009 ground condition LIDAR2 Oregon Department of Geology and Mineral Industries and Watershed Sciences, Inc., 2009, LiDAR of Portland: digital data set courtesy of Ian Madin, available via external hard drive [digital data set] Geospatial Enterprise Office 2009 raster digital data http://oregonexplorer.info/imagery/ online 2009 ground condition NAIP Base image for interpretation McGaughey, R.J. 2009 2.90 software http://www.fs.fed.us/eng/rsac/fusion software 2009 publication date FUSION Software package used to calculate canopy statistics used in organic matter load estimates. Keane, R.E. Mincemoyer, S.A. Schmidt, K.M. Long, D.G. Garner, J.L. 2000 document http://www.fs.fed.us/rm/pubs/rmrs_gtr046.pdf online 2000 publication date CBD Crown bulk density values used for calculating fuel load and weight of organic matter. Fule, P.Z. Waltz, A.E. Covington, W.W. Heinlein, T.A. 2001 document http://www.sierraforestlegacy.org/Resources/Conservation/FireForestEcology/FireScienceResearch/FuelsManagement/FM-Fule01.pdf online 2001 publication date CBH Methods applied for estimating Canopy Base Height. Sobieszczyk, Steven 2011 raster digital data http://water.usgs.gov/lookup/getspatial?fannoCk_lndcvr_09 online 2009 ground condition LULC Land cover data set used to filter mixed forest from evergreen forest. Digitizing: The floodplain was digitized at a scale of 1:1,000. Floodplain boundaries were determined using slope breaks interpreted from the LiDAR elevation data and generally follow the base of hill slopes. The floodplain commonly narrows at bridge crossings and other road abutments. At tributary junctions, the floodplain boundaries were truncated to follow the course of the Fanno Creek floodplain. LiDAR1 LiDAR2 NAIP 20101101 Digitized floodplain extent was compared against NAIP aerial imagery to verify location. NAIP 20101115 Mapping verified by second project member. 20101101 Floodplain was then segmented into separate reaches based on a number of different parameters, including road crossings/bridges, environmental setting, land use classification, and relative size. The floodplain was eventually segmented into 13 near equal size reaches. Each reach was attributed with different land classifications (wetland, riparian forest, lawn) and segmentation identification boundaries (Oleson Rd, Bonita Rd, etc.). NAIP 20101102 After the floodplain was mapped and segmented into reaches, it was used to process LiDAR LAS point file data to produce different canopy metrics for the study area. The first step in this LiDAR processing was to clip and normalize the "point cloud" LAS data. The LAS files were clipped to each floodplain reach extent using the CLIPDATA command in FUSION and normalized with the ground points. This converted elevation values into height values. FUSION LiDAR1 LiDAR2 20110811 The land cover data set (LULC) was converted into a shapefile polygon filter and used to clip the LAS point data (POLYCLIPDATA command in FUSION) into either mixed riparian (including mixed forest, shrub/scrub, and wetland classes) or evergreen forest. FUSION LiDAR1 LiDAR2 LULC 20110811 The CLOUDMETRICS program in FUSION was run on the "filtered" point cloud data within each floodplain reach for both mixed riparian and evergreen forest. Outputs included height and density metrics, as well as canopy cover percentage. FUSION LiDAR1 LiDAR2 20110811 Based on CLOUDMETRICS results, other canopy metrics were calculated, such as canopy base height [based on 20th percentile height values (CBH)], canopy height [based on 80th percentile height values (CH)] and crown bulk density [based on vegetation type (CBD)]. CBH CBD 20110811 The CBH, CH, and CBD were then used to calculate the canopy bulk density (kg/m3) and the canopy fuel load (kg/m2) for the different vegetation types (mixed riparian and evergreen forest). The fuel load was divided by the associated area within each reach to determine dry biomass (weight) of canopy organic matter, or biomass. This value (kg) was attributed to the floodplain reach shapefile. 20110811 This process was repeated for the active (wetted) channel for each reach. The floodplain fuel load estimate was clipped to the active channel to determine the dry biomass (weight) of canopy organic matter, or biomass, within the active channel by reach. 20110811 Vector Lambert Conformal Conic HARN 44.333333 46.000000 -120.500000 43.666667 8202099.73753281 0 Coordinate pair 3.00000 3.00000 feet North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 fannoCk_fldpln Geomorphic floodplain for Fanno Creek USGS OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. Id Discrete Feature ID. USGS Positive real numbers that are manually generated. Unique to each reach. Area Area of feature in square miles USGS Area calculated from data set areal measurement. Acres Area of feature in acres. USGS Area calculated from data set areal measurement. Name Name of reach segment. USGS Names assigned to each reach segment. Unique to each reach. Descript Description of generic reach land cover type. USGS Descriptions assigned to each reach segment (wetland, lawn, riparian forest). Bounds Road boundaries defining reach extent. USGS Names of streets that bound reach segments. Unique to each reach. Shape_Length Length of feature in internal units. ESRI Positive real numbers that are automatically generated. Shape_Area Area of feature in internal units squared. ESRI Positive real numbers that are automatically generated. kg_fldpln Weight of organic matter, or biomass, for each reach. USGS 960000 5400000 kilograms kg_chnl Weight of organic matter, or biomass, for active channel within each reach. USGS 75000 770000 kilograms Values define extent of geomorphic floodplain, reach segments, and corresponding organic matter, or biomass. N/A U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

445 National Center

Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html Downloadable Data Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners. shapefile PKZIP compression Winzip 1000 http://water.usgs.gov/GIS/dsdl/fannoCk_fldpln.zip None. This dataset is provided by USGS as a public service. 2009 20110404 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

445 National Center

Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+fannoCk_fldpln FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998