Description: Line data assigned from point-level channel surveys as a way to define a reach length. Used in hydromod analysis to bring in physical channel data.
Description: Line data assigned from point-level channel surveys as a way to define a reach length. Used in hydromod analysis to bring in physical channel data.
Description: The location of these wetlands was determined by Pacific Habitat Services using 1"=200' scale aerial photographs and ground truthing as part of the Bethany Local Wetlands Inventory.
Description: In the winter of 2008, field researchers GPS'ed or digitized from aerial photos, wetlands in the West Bull Mountain Natural Resource Area.
Description: This is the final wetland mapping results for the South Cooper Mountain LWI showing all mapped wetlands and other waters features (e.g. ponds) mapped as polygons within the LWI study area. The data was compiled by David Evans and Associates, Inc. (DEA) based on a combination of field investigations by DEA where property access was granted, information from property owner consultant representatives (formal wetland delineations approved by DSL and reconnaisance level documentation not formally reviewed by DSL), aerial photo review, and review of NWI and Soils survey mapping. Typical mapping accuracy is 15 feet or better. Wetland features formally delineated by others and concurred by DSL are assumed to have accuracy of 3 feet or better. DEA recieved the electronic linework from the associated consultants and incorporated it directly into this wetland GIS layer. Additional methods are provided in the South Cooper Mountain Annexation Area LWI Report prepared by DEA (Feb 2016).Field Descriptions:DEA_type: feature type as determined by DEA (e.g. wetland, open water, probable wetland, or detention pond)DEA_ID: feature ID as assigned by DEA. W-# refers to wetland features; PW-# refers to probable wetland features; OW-# refers to open water features (i.e. ponds); DP-# refers to stormwater detention pondsDEA_LSW = Mapped wetlands determined to be Locally Significant Wetlands (Y = yes, significant; N = not significant)DEA_ID = feature ID assigned by DEA.SiteAccess: yes = site access was granted, no = site access was not grantedVisualConfirm: na = not applicable since site access was granted; yes = feature presence and approximate boundaries could be confirmed from off-site location (e.g. adjacent property or public right of way); Others = direct visual confirmation not possible, but landowner consultant had provided field recon documentation, or property had an approved wetland delineation.DSL_WDs: = wetland boundary was at least partially delineated by an approved wetland delineation. Some wetlands extend onto adjacent properties with no approved delineation.Artificial: provides a label description for artificially created features. Note that artificial pond features are likely still regulated since they are in line with natural features that provide their hydrology source. Stormwater detention ponds are not typically regulated by DSL or the USACE.DEA_Cowrdn and DEA_HGM: these are the Cowardin and Hydrogeomorphic classes as assigned to wetland and water features by DEA. Not applicable (na) is assigned to the stormwater detention ponds.
Copyright Text: David Evans and Associates, Inc. (DEA)
Supporting documentation provided by:
• AKS Engineering & Forestry, LLC. Dyches Property Wetland and Waters Delineation Report,
Beaverton, Oregon (2014)(DSL WD#2015-0063)
• Anchor QEA, LLC. Wetland Delineation Report, West Hills Development: Crescent Grove
Property (2015)(DSL WD#2015-0105)
• Pacific Habitat Services, Inc. Wetland Delineation for Beaverton School District in Beaverton,
Washington County, Oregon (2014)(DSL WD#2014-0497)
• Environmental Science and Assessment (2013)Fox Hollow Wetland/Goal 5 Natural Resource Determination (18200 SW Horse Tale Drive
Washington County, Oregon, Tax Map 1S131000, lot 1602) Technical Memorandum
• Environmental Science and Assessment (2013), Oregon Goal 5 and Metro Title 13 Natural Resources Determination –Scholls Ferry Road
Properties (Tax Map 2S10600, lots 301, 302, and 700) Technical Memorandum
Description: Data were collected in order to prepare a Local Wetland Inventory (LWI) pursuant to Oregon Revised Statues (ORS) and Oregon Administrative Rules (OAR), and to comply with Goal 5 of the State of Oregon Statewide Planning Goals.
Copyright Text: Data collected by Fishman Environmental Services, LLC on behalf of the City of Hillsboro
Description: Wetland boundaries were identified using differentially corrected GPS data were accessible and digitized from 6" aerial imagery were no access was granted.
Description: Created to prepare a Local Wetland Inventory pursuant to Oregon Revised Statues (ORS) and the Oregon Administrative Rules (OAR) and to comply with Goal 5 of the State of Oregon Statewide Planning Goals.
Copyright Text: Published by Pacific Habitat Services
Description: This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the United States and its Territories. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. This dataset should be used in conjunction with the Wetlands Project Metadata layer, which contains project specific wetlands mapping procedures and information on dates, scales and emulsion of imagery used to map the wetlands within specific project boundaries.
Description: The FEMA Flood Hazard Layer represents the location and attributes of flood insurance risk zones from the Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk.
Copyright Text: Federal Emergency Management Agency (FEMA)
Description: The FEMA Flood Hazard Layer represents the location and attributes of flood insurance risk zones from the Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk.
Copyright Text: Federal Emergency Management Agency (FEMA)
Description: The FEMA Flood Hazard Layer represents the location and attributes of flood insurance risk zones from the Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk.
Copyright Text: Federal Emergency Management Agency (FEMA)