The Oregon Rapid Wetland Assessment Protocol (ORWAP) is a tool for quickly assessing wetland functions and values in all wetland types throughout Oregon. ORWAP is used for assessing wetlands for the purposes of Oregon’s Removal-Fill Law, as well as purposes related to Section 404 of the federal Clean Water Act.
The ORWAP User's Manual provides step-by-step, illustrated instructions for using ORWAP. It also includes background information, changes in the refined version, using ORWAP for various purposes, and descriptions of the models. It is essential that anyone applying ORWAP read the manual thoroughly. See below and/or contact DSL for information regarding training in ORWAP.
This spreadsheet contains a cover page to enter basic information about the assessment, worksheets for entering office and field data, a Scores sheet (scores automatically generated by ORWAP and worksheets detailing the computation of function and value scores).
Field Data Worksheets (PDF): The PDF forms below are user-friendly, print-ready versions of the data form worksheets to use when collecting data in the field.
This spreadsheet provides a wealth of information on plant species, rare animal species, invertebrates, and important bird areas. Explore it!
Procedures used to refine, re-calibrate and test ORWAP version 3.2 and 3.1. This document provides information on the models, weighting and scoring, normalization of scores, and score ratings used in ORWAP v. 3.2 and 3.1.
The map viewer provides site-specific mapping and reporting information needed to answer most of ORWAP's office indicator questions.
Guidance for Using ORWAP version 3.2 in State and Federal Permitting Programs
See Appendix F of the ORWAP User’s Manual. 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.
Previously distributed versions of ORWAP are provided here to allow users to apply an identical ORWAP version to a site that is being assessed over a period of years.
If you used version 2.0 and completed data entry, please contact Paul Adamus
for instructions on pasting answers into the updated version 2.0.2. This is important due to several cell/formula errors discovered in version 2.0. Version 2.0.1 was the first version maintained for future use.