This is a catalog of adaptable technology available in electronic form. The focus of this edition is information, drawings, and specifications which can be used in restoration or protection of streams. It includes items such as fences, erosion control structures, vegetative practices, instream fish habitat structures, roads and crossings, silt fences, and other works that benefit streams, or mitigates undesired effects on streams, through a watershed approach. The information is public and is not for resale. This is the first national edition. It will be updated periodically, and by no means should this be considered a completed product. Technology will evolve and require updates; products, applications, and needs will change over time. A watershed approach will result in a broadening of materials and audiences requiring additions and revisions. The originating location is a part of the electronic record for each item. Updates and drawings prepared in the future will include Standard International (metric) details in accord with the Metric Conversion Act of 1975 (Public Law 94-168) and its amendments.
How can you use these documents?
The user is accorded the credit and must assume the responsibility for use. The decision on whether to use any of the provided technology at a specific site must be based upon careful planning, adequate investigation, and appropriate technical skills and judgment. Some of the included material may be outdated. The drawings and associated information can be useful in explaining concepts, in developing implementation plans, and in review of implementation. The intent of this material is to provide a starting point for the development of project specific details. A specific plan may require use of additional references. The OSHA standards, the NRCS references such as the Handbook of Conservation Practices, the Engineering Field Manual, the Model State Standards and General Specifications, materials specifications, construction specifications, or information from other agencies should be considered. The catalog provides users with the opportunity to accelerate the development of technology. The materials in the catalog can be used by others and their experience becomes available to you through direct contact, review of summary comments, or updates of the catalog. Accordingly the developed materials provided for future inclusion should accommodate wide usage.
What is included?
This is a collection of stream related technologies and structures which generally require drawings. The collection is categorized by topics which describe the technology, its use or location of use. Currently, the categories include soil bioengineering, fencing, instream improvements, pollution control, recreation facilities, shaped slopes, revetments, roads and crossings, urban plantings, hydraulic structures and watersheds. Select the category of interest and look there first. Some items may apply in more than one category so check any possibility before deciding the item is not included. Each drawing may be conceptual, illustrative, or detailed. The type of drawing may meet needs of user groups such as volunteers, individuals, or contractors as follows; 1) conceptual and/or illustrative - for information 2) jobsheets/drawings - for installation by volunteers or cooperators 3) contract documents The first edition contains widely applicable, successfully applied technology, and some technology which has had few applications. Some of the material may be outdated, and may no longer apply for certain uses.
Additional categories are expected in the future to address the concerns related to the natural resources of soil, water, animal, plant, and air (SWAPA). For the future, two levels of information are proposed. One level would include information that has been successfully applied, or reviewed for adequacy by a WTEC team. The second level will include newly developed technology that has not been reviewed. Periodically an independent review team could be established to provide feedback and identify information which should be added or removed. Policy and procedures will be established to meet future needs as planned by WTEC teams or identified by the response of users.
How are the electronic files provided and organized?
The WTEC is available on the Internet through the NRCS Home Page, Technical References, (http://ncg.nrcs.usda.gov/tech_ref.html). Thumbnail views (.gif format) are included to aid in file selection. The files are collected in directories of closely related materials. The files are available in formats (.dxf or .dwg) prepared using AutoCAD version 12. Some files are available in format (.doc) prepared using MS Word version 5. Procedures for downloading are included on the WTEC page. Printing or editing the files will require software for the downloaded format. The current directories include;
ROADS AND CROSSINGS
The subject files are not necessarily exclusive and may contain materials which could be filed under another subject. For example stream crossings are included in ROADS AND CROSSINGS whereas a user might originally expect them in the directory INSTREAM IMPROVEMENTS.
We thank all of the contributors to this edition, and note that many materials were not selected because of similarity to earlier selections. The file names contain the initials of the state or agency which provided the information. The collected material is as provided by the originating location with minor changes as noted on the CAD record. Selected drawings and materials were contributed by the following; California Department of Fish and Game Maryland Department of the Environment USDA Natural Resources Conservation Service Arkansas, Illinois, Iowa, Maryland, Michigan, Minnesota, Nebraska, New Jersey, New York, North Carolina, Oregon, Washington, Wisconsin USDA Forest Service USDI Bureau of Land Management