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ORWAP consists of several components - all downloadable below. Components include the Users Manual; two Excel spreadsheets that are the guts of ORWAP; PDF versions of the data forms that users fill out; PDF versions of several of the supplemental information worksheets; and a separate guidance document for using ORWAP for state and federal permitting.
 ORWAP is recommended for assessing wetlands for purposes of the state Removal-Fill Law, and is also recommended by the Portland District Corps of Engineers. However, please see DSL's administrative rules regarding those instances when Oregon's reference-based HGM methods must be used, instead of ORWAP (OAR 141-085-0685).
ORWAP Users Manual 
Users Manual Errata Sheet
The ORWAP Users Manual provides step-by-step, illustrated instructions for using ORWAP. It also includes background information, information about ORWAP development and testing, using ORWAP for various purposes, descriptions of the models and complete citations. It is strongly recommended that you print the Manual in color (due to the color maps and other illustrations). If you wish to print only the portions that are important to read and have handy as a "field manual" to save on printing cost, print just through Section 4.0 and also print Appendix A: Additional Explanatory Illustrations. It is essential that anyone applying ORWAP read these sections thoroughly. See below and/or contact DSL for information regarding training in ORWAP.
ORWAP Calculator (Excel Spreadsheet) Version 2.0.1
This spreadsheet contains the office and field data form worksheets, the FinalScores form (scores automatically generated by ORWAP), the data forms for your data entry (from the office and field forms), and all of the detailed output derived from your data entry. The PDF forms below are user-friendly, formatted versions of the data form worksheets for use in the field. Print and use these PDF versions rather than the worksheets for collecting your data.
CoverPg Data Form
Office Data Form
Field F Data Form
Field S Data Form
ORWAP Supplemental Information (Excel Spreadsheet) Version 2.0.1
This separate spreadsheet contains a wealth of additional information. Explore it! The worksheets that you will need for answering specific questions - and are most likely to refer to regularly and want to take with you in the field - are provided below as concise, formatted PDF files. The name of the related worksheet is given in parentheses.
Plant Wetland Indicator Status (WIS worksheet)
Invasive Plants (P_INVAS worksheet)
Non-Native Plants Found in Oregon Wetlands (P_EXO worksheet)
Wetland Plants Uncommon in Oregon (P_UnCom worksheet)
Salt-tolerant and Low Tidal Marsh Plants (P_SALT worksheet)
Plants Reputed to Support Nitrogen Fixation (NFIX worksheet)
Important Bird Areas (IBA worksheet)
Estuary Salinity Maps
These maps are referred to in ORWAP Question D49. All maps are in one file.
North Florence Dunal Aquifier Map
This map shows the North Florence Aquifier area referred to in ORWAP Question D44
Flow Chart for Estimating Soil Composition
This chart is in Appendix A of the ORWAP Users Manual but you may want to print this to take into the field.
Guidance for Using ORWAP in State and Federal Permit Programs
This document was developed along with ORWAP to provide guidance to applicants, consultants and regulatory staff for using ORWAP for state and federal permit purposes.
Questions and Answers on Regulatory Guidance for Using ORWAP
Previous ORWAP Versions
Previously-distributed versions of ORWAP will be provided here. The purpose is to allow users to apply an identical ORWAP version to a site that is being assessed over a period of years. However, if you used version 2.0 and completed data entry, please contact Paul Adamus (see e-mail below) for instructions on pasting answers into the updated version 2.0.1. This is important due to a couple of cell/formula errors discovered in version 2.0. Version 2.0.1 will be the first version maintained for future use.
Additional Information and Training
Joint public notice on the release of ORWAP
Three ORWAP trainings will be offered through
the Wetland Training Institute during 2010. The
trainings will be held in Portland in February, March
and September. Information is at the following link
http://www.wetlandtraining.com/orwam.html
DSL plans to provide additional training in ORWAP on a periodic basis, likely twice per year depending on demand. To be placed on a list to be notified of upcoming tranings, please e-mail Heather.Howard@state.or.us.
For more information about ORWAP, contact Paul Adamus at Adamus7@comcast.net or Janet Morlan at Janet.Morlan@state.or.us.
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