Geographical Information Center unpublished material vector digital data https://wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/300_399/ds343.zip This layer was obtained for inclusion in BIOS from the Chico State Geographic Information Center (GIC) Website. Permission to post these data in BIOS was provided to Eric Haney (ehaney@dfg.ca.gov) by Chuck Nelson of the GIC on 9/7/2007. These data can be downloaded along with the original layer (1991 - 1998) as well as similar layers for other regions of the Central Valley from http://www.gic.csuchico.edu/Veg_sac.html . These data should be used for riparian vegetation assessment purposes only. These data are not recommended for use at the project or parcel level. This Sacramento River Riparian Mapping 1999 effort is an update to the Sacramento River Riparian Mapping Project that was started in 1991 and completed in 1998. This project, however, was confined to the mainstem of the Sacramento River between Colusa on the south and Keswick Dam to the north. It is located in the Sacramento River Conservation Area (SRCA) approximately between River Mile 129 and RM 300. The mapping was completed in 2002 using aerial photography taken in 1999 for the Sacramento River Comprehensive Study. The airphotos were flown at the nominal scale of RF=1:7200 (1"=600'). The project was funded by three agencies with a services match from the Geographical Information Center at California State University, Chico. Funding agencies included the California Department of Water Resources-Northern District Office, the California Wildlife Conservation Board, and The Nature Conservancy's Sacramento River Division. Polygons were heads-up digitized on-screen in ArcView from ortho-rectified true color scans. Orthorectification was done using Ortho Engine software, version 8, developed by PCI Geomatics of Ontario, Canada. This data is to be used for riparian vegetation assessment. 19990101 ground condition Complete Unknown -122.447180 -121.892678 40.623484 39.106915 None Riparian vegetation ISO 19115 Topic Category biota environment None Colusa to Keswick Dam Northern California Sacramento River No access constraints No use constraints Do not distribute without permission from Chuck Nelson 530-898-4469 cwnelson@csuchico.eduDisclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data. Geographical Information Center Chuck Nelson Director mailing

Geographical Information Center

California State University, Chico

Chico CA 95929-0327 530-898-4469 530-898-4348 cwnelson@csuchico.edu Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Edited original metadata by adding ISO keywords. 20071204 California Department of Fish and Game Kristina White bios@dfg.ca.gov Vector GT-polygon composed of chains 12234 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 ds343 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. Veg_Class Riparian Vegetation Class GIC Blackberry Scrub Blackberry Scrub. >= 80% coverage by blackberry vegetation. Great Valley Cottonwood Riparian Forest Great Valley Cottonwood Riparian Forest. >= 80% Cottonwood by canopy cover - One year old or greater. CF represents the earliest successional sere. These forests are dominated by cottonwood (Populus fremontii) and one or more tree willows (Salix gooddigii variabilis, S. laevigata, and S. lasiandra are most common) California Grape(Vitis californica) is the only conspicuous vine. Disturbed Disturbed. This unit identifies areas that are undergoing major disturbances and are now either completely devoid of riparian vegetation or contain only small remnants of it. Gravel and Sand Bars Gravel and Sand Bars - These appear as open, unvegetated areas in air photos, but ground truthing reveals several annual and short-lived perennial species of sun-loving herbs, grasses and aromatic subshrubs. The vegetation coverage is less than 50%. Giant Reed Giant Reed. Arundo donax. Grass <8 meters. A very invasive plant that reduces and replaces native species. Herbland Cover Herbland Cover. Composed of annual and perennial grasses and forbs. Must be enclosed by riparian vegetation or the stream channel. Valley Freshwater Marsh Valley Freshwater Marsh. Valley freshwater marshes are dominated by perennial emergent monocots. Coverage may be very high, approaching 100%. Cattails (Typha spp.) or tule (Scripus spp.) usually are the dominants, often forming monotonous swards that are sparingly punctuated with additional taxa such as sedges (Carex spp.), cane (Phragmites australlis), or blue vervain (Verbena hastata). Great Valley Mixed Riparian Forest Great Valley Mixed Riparian Forest. In this unit neither willows nor cottonwoods dominate - also contains a mixture of more upland, later successional species that may include valley oak ( Quercus lobata) at less than 60% canopy coverage, black walnut (Juglans spp.), ash (Fraxinus latifolia), tree of heaven (Ailanthus altissima), and sycamore (Platanus racemosa). Open Water Open Water. This mapping unit constitutes water, either standing or moving, and does necessarily imply vegetation. Great Valley Riparian Scrub Great Valley Riparian Scrub. Young primary succession which includes streamside thickets dominated by one or more willows or by other fast growing shrubs and vines. Tamarisk Tamarisk. "Saltcedar" Tamarix chinensis. Invasive shrub found in open areas along the river. Originally introduced as an ornamental and for erosion control, Tamarisk has become an undesirable weed. Plants spread by seed and cuttings and grow rapidly. Valley Oak Valley Oak (Quercus lobata) >= 60% canopy cover - must be contiguous or have longest axis greater than the distance from riparian vegetation. Acres Acres - Area of habitat polygon (in units of US acres) Calculated 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. Geographical Information Center Chuck Nelson Director mailing

California State University, Chico

Geographical Information Center

Chico CA 95929-0327 530-898-4469 530-898-4348 cwnelson@csuchico.edu See access and use constraints information. 20231027 Geographical Information Center Jason Schwenkler Project Manager physical

Geographical Information Center

35 Main Street

Chico CA 95929-0327 530-898-4372 530-898-4348 schwenkl@gic.csuchico.edu FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time