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Stream*A*Syst
A Tool to Help You Examine Stream Conditions on Your Property

EM 8761
Reprinted March 2001. Updated online October 2007
G. Andrews and L. Townsend


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What Is Stream*A*Syst?kildeer drawing

Stream*A*Syst stands for Streamside Assessment System. It is a set of materials for landowners who want to learn more about managing their streamside areas. You can go through these materials on your own to determine whether there are factors related to your stream that could be improved by better management practices. There are two main parts:

The Stream*A*Syst Worksheet

You obviously want to learn more about your stream. The worksheet is a quick way to help you focus on the aspects of your stream that need the most attention. If you aren’t sure about the answer to a question, don’t worry. There is no score or grade for the worksheet. It is just a way to draw your attention to some of the indicators of stream and streamside conditions.

This worksheet covers aspects that you can evaluate with no special equipment or expertise. It is not intended to be all-inclusive, just to get you started.

The Stream*A*Syst Action Plan

The action plan takes you beyond learning about your stream. You can use it by itself or after you have completed the worksheet. It has a checklist of possible concerns about your stream. The numbers on the action plan correspond to the question numbers on the worksheet.

Once you have checked your areas of concern, you can read what to do and find out who to call. If you record your actions in the space provided, you can look back and see how your management made a difference in your stream.

Learning More About Your Stream

There are many sources of information about streams and streamside areas. Ask any of the agencies listed on the Statewide Resources list about printed resources, upcoming workshops, or staff available to work with landowners. Most of the Web sites have materials you can download.

Stream*A*Syst Worksheet

A Tool to Help You Examine Stream Conditions on Your Property

Directions: These questions will help you identify potential concerns for your stream or streamside area. For the items you answer YES, refer to the Stream*A*Syst Action Plan to find out what you can do to improve or protect your stream resource. Ask your Watershed Council, Soil & Water Conservation District (SWCD), or OSU Extension Service office for information. A YES answer doesn’t necessarily mean there is a problem, but it can help focus your efforts as you learn more about your particular situation.

1. Water pollution A. Are there ever any signs of pollution such as soap bubbles, oil sheen, unusual odors, or trash in or along the stream? NO YES
B. Can you smell or see any evidence that manure or sewage might be entering the stream? NO YES
2. Algae A. Is the water green? NO YES
B. Is there a green scum or thick, stringy, green clumps? NO YES
C. Is there a heavy, dirty-brownish, slimy material coating underwater objects? NO YES
3. Muddy water A. Does the stream become muddy after storms and then take a long time to clear up again? NO YES
B. Is the stream water muddier or cloudier when it leaves your property than when it enters? NO YES
4. Long-term data A. Do long-term data show that your stream is limited in any water quality measurements? (The Oregon 303(d) stream segment database is available on DEQ’s Web site and at most libraries.) NO YES
B. Is water quality information unavailable for your stream? NO YES
5. Barriers to fish or water flow A. Are there any culverts, dams, or other artificial structures in your stream that could block fish passage? NO YES
B. Are bridges or in-stream culverts inadequate in size to be able to convey high, overbank flood flows? NO YES
6. Ditches and drainage Are there any irrigation ditches, tile lines, drainage ditches, or other artificial waterways connected to the stream? NO YES
7. Water removal A. Do water withdrawals or upstream dams ever result in extremely low water levels? NO YES
B. Is water removed from the stream for any reason without a Water Right? NO YES
8. Flood and erosion-control structures A. Are there any berms, dikes, or riprap along the stream? NO YES
B. Has the stream been straightened? NO YES
9. Floodplain Are there any buildings or chemical storage facilities within the 100-year floodplain? (Find the 100-year floodplain on Federal Emergency Management Agency (FEMA) maps available at SWCD or county development offices.) NO YES
10. Channel condition A. Is the channel much wider and shallower than in
the past?
NO YES
B. Are gravel, sand, or silt bars noticeably building? NO YES
C. Are there high, vertical banks in straight sections? NO YES
11. Changes after large flows Are there major changes to the stream after large flow events? For example, are pools filled in, riffle areas moved, streambanks greatly eroded, or the whole channel moved? NO YES
12. Streambank protection Are there areas of bare soil along the stream that will come into contact with water during high or overbank flows? NO YES
13. Vegetation along the streambank Have activities such as construction, grazing, landscaping, or tilling within 35 feet of the top of the streambank disturbed the permanent vegetation? NO YES
14. Type of
streamside plants
A. Are there very few trees along the stream? NO YES
B. Are there large areas with plants considered to be weeds, such as blackberry, scotch broom, reed canarygrass, English ivy, thistle, cheatgrass, or others? NO YES
C. Do bare soil or thin stands of grass dominate the area? NO YES
15. Other Do you have other concerns about the condition of your stream? NO YES

Stream*A*Syst Action Plan

Location of property______________________________________

Date of plan_____________________________________________

Directions: Based on your Stream*A*Syst Worksheet, mark your Areas of Concern below. If you identified concerns that are not listed, add them at the end of the chart. Use the recommended steps to address your concerns. Phone numbers and Web sites for "Who to Call" are on the Statewide Resources list.

Area of Concern What You Can Do Who to Call
1. Water
pollution

A. Chemical odors, oil sheen, or other signs of water pollution.

1. Use Home*A*Syst Petroleum Tank, Hazardous Waste, or Pesticide Storage Worksheets to check for leaks, spills, or waste disposal on your property.

2. Check with upstream neighbors.

3. Report pollution to DEQ.

Record of your actions:

1. Home*A*Syst

2. Watershed council,
your neighbors

3. DEQ

B. Evidence of manure or sewage entering the stream.

1. Use Home*A*Syst Septic System and/or Manure Management Worksheets to evaluate your situation.

2. Have your septic system pumped and inspected. If problems are found, make needed repairs.

3. Have someone help you evaluate your manure management practices and make recommended changes.

Record of your actions:

1. Home*A*Syst

2. Septic pumping company (information available from OSU Extension)

3. OSU Extension,
SWCD/NRCS

2. Algae

Green water, mats of algae, or heavy slime on rocks.

Determine whether nutrients from fertilizer or manure runoff are entering the stream from your property. If so, take steps to prevent it. If not, check with upstream neighbors.

Record of your actions:

SWCD/NRCS

Watershed council

OSU Extension

Your neighbors

3. Muddy water

A. Water is very muddy after storms or takes a long time to clear.

If the source of sediment is not found on your land, check with upstream neighbors. Look into upstream land-use practices that might be causing muddy runoff.

Record of your actions:

SWCD/NRCS

Watershed council

Your neighbors

B. Stream becomes cloudy or muddy on your land. Determine whether sediment is entering the stream from your property; look for runoff from unpaved roads, fields, severe bank erosion, or other sources. When you find the problem, take steps to prevent it.

Record of your actions:

SWCD/NRCS

Watershed council

4. Long-term data

A. Data show that your stream is water quality limited.

1. Search for your stream on the Web (waterquality.deq.state.or.us/WQLData/SelectBasin98a.asp) or in the bound copy of DEQ’s 1998 303(d) database at most libraries. Ask listed contacts for information.

2. Learn more about the specific limiting factor and its connection with activities on your land.

3. Get involved with local efforts to improve water quality.

Record of your actions:

1. Watershed council, DEQ, SWCD/NRCS

2. SWCD/NRCS,
OSU Extension, watershed council

3. Watershed council

B. There is inadequate water quality data for your stream. Check with your watershed council to determine how you can help gather needed data.

Record of your actions:

Watershed council

5. Barriers to fish or water flow

A. Barriers might block fish passage.

Get ODFW form and evaluate the barrier. If the barrier prevents fish passage, modify it as needed.

Record of your actions:

ODFW

B. Culverts or bridges not sized adequately. Measure culvert and contact forestry expert to help determine size of culvert required.

Record of your actions:

Oregon Dept. of Forestry
(503-945-7422)

OSU Extension forestry agent

6. Ditches and
drainage

Waterways are connected directly to the stream.

1. Create grass filter strips or other means to remove contaminants before drainage water enters the stream.

2. Screen ditches.

Record of your actions:

1. SWCD/NRCS

2. ODFW or SWCD for technical and financial assistance

7. Water removal

A. Water withdrawals cause low water levels.

1. Improve efficiency of water use on your property.

2. Take advantage of financial incentives for returning allocated water to the stream.

Record of your actions:

1. SWCD/NRCS, OSU Extension

2. WRD

B. Water is removed from
the stream without a Water Right.
Do not withdraw water without a Water Right. Ask Watermaster about Water Rights for your stream.

Record of your actions:

Local Watermaster or state office of WRD

8. Flood and
erosion-control
structures

A. Riprap, dikes, berms, etc. are present along the stream.

With the help of an expert, determine how these structures are affecting the condition of the stream. If a problem, modify as recommended by the expert.

Record of your actions:

SWCD/NRS

B. Stream has been straightened. With the help of an expert, determine whether straightening the stream is causing any functional problems with the stream.

Record of your actions:

SWCD/NRCS

9. Floodplain

Chemicals, fuel, or manure are stored on the 100-year floodplain.

1. If on your property, remove the source of future pollution to floodwaters.

2. If on your neighbors’ land, discuss your concerns with them.

3. If a spill has occurred, report it to DEQ and clean up according to their guidelines.

Record of your actions:




1. Home*A*Syst for information on storage facilities for fuel, manure, fertilizer, or pesticides

2. Your neighbors

3. DEQ for information on disposing of hazardous chemicals, to report a spill, or for guidance with cleanup.

10 & 11. Channel condition/
changes after large flows

There are high, vertical banks; or the channel is getting wider and shallower; or gravel, sand, or silt bars are building; or there are major changes after large flows.

Do not be tempted to “fix” on your own. Work with an expert to determine causes and possible solutions.

The stream might be out of balance with the amount of water and sediment it is carrying. Ask about changes you can make or possible restoration efforts. Keep in mind that changes might be needed up- and downstream, so plan coordinated efforts with neighbors.

Record of your actions:

Watershed council

SWCD/NRCS

Your neighbors

12.Streambank
protection

Streambanks are not protected from erosion during high flows.

Provide natural, long-term streambank protection with plantings that will introduce large wood and/or add stability from roots. Determine whether artificial protection measures are needed while plants are becoming established.

Record of your actions:

SWCD/NRCS

Watershed council

13. Vegetation along the streambank

Vegetation near the stream has been disturbed.

Identify streamside area that needs to have vegetation and commit to management changes within that area. If the area is grazed by livestock, develop and follow a prescribed grazing program, build off-stream watering facilities, and establish fencing as necessary.

Record of your actions:

SWCD/NRCS

Watershed council

OSU Extension

14. Type of
streamside plants

A. Trees are not surviving or reproducing in the streamside area.

Determine whether the water level has dropped or the channel has deepened. If so, roots of young trees might not be able reach the water table.

If water level is not the problem, remove brush that might be shading young conifers. Protect young trees from browse damage with tubes. Plant only trees recommended for your site.

Record of your actions:

SWCD/NRCS

OSU Extension

Watershed council

B. Invasive weeds are evident in the streamside area. Identify the most appropriate method for removing the weeds. Determine whether grazing management changes are needed.

Record of your actions:

SWCD/NRCS

OSU Extension

Watershed council

C. Bare soil or thin stands of grass dominate the streamside Identify reason for lack of vegetation and take care of it. Restore vegetation to the streamside area. Make sure to plant trees and shrubs suited to your location and follow through with the project to ensure survival. Ask about financial assistance

Record of your actions:

SWCD/NRCS

Watershed council

15. Other concerns

Record of your actions:




 

Oregon Statewide Resources for the Stream*A*Syst Action Plan

The contacts listed below correspond to the Who to Call column of the Stream*A*Syst Action Plan. While this list seems fairly long, it is not a complete listing of agency contacts available to help landowners with stream and streamside issues. Staff from various agencies often work together and know each other’s special area of expertise, so you might be referred from one office to another in an effort to get you to the best local person to handle your situation.

Abbreviation Contact Information
SWCD/NRCS

USDA Natural Resources Conservation Service & Soil and Water Conservation District
Local offices usually listed under United States Department of
Agriculture under Federal in the phone book Government pages.
Web (NRCS): www.or.nrcs.usda.gov
Web (SWCD): www.netcnct.net/community/oacd
Phone: 503-414-3200

Local phone:___________________

OSU Extension

Oregon State University Extension Service
County offices listed under County in the phone book Government pages.
Web: osu.orst.edu/extension/
Phone: 541-737-2713 (to locate your county office)

Local phone:___________________

ODFW

Oregon Department of Fish and Wildlife
Regional offices listed under State in the phone book Government pages.
Web: www.dfw.state.or.us
Phone: 503-872-5252

Local phone:___________________

DEQ

Oregon Department of Environmental Quality
Regional offices listed under State in the phone book Government pages.
Web: www.deq.state.or.us
Phone: 800-452-4011

Local phone:___________________

WRD

Oregon Water Resources Department
Contact the state office to locate local Watermaster offices.
Web: www.wrd.state.or.us
Phone: 800-624-3199

Local phone:___________________

Watershed councils

State-recognized stakeholder groups based on stream or river
drainages. Check with your SWCD or OSU Extension Service office
for local contacts. A list of Oregon watershed groups is on the Web at:
www.4sos.org/wsgroups/wsgroups-or.html

Local phone:___________________


Development of Stream*A*Syst was coordinated by Gail Glick Andrews, Home*A*Syst-Farm*A*Syst coordinator, Oregon State University; and Lyn Townsend of the USDA NRCS Watershed Science Institute at the University of Washington, Seattle. Funding was provided by the USDA Natural Resources Conservation Service in Oregon through the Environmental Quality Incentives Program. There was extensive input and review from staff of the USDA Natural Resources Conservation Service, Oregon State University, Soil and Water Conservation Districts, and others.
Published June 2000. Reprinted March 2001.
Updated online October 2007.

Produced and distributed in furtherance of the Acts of Congress of May 8 and June 30, 1914. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination based on age, color, disability, gender identity or expression, marital status, national origin, race, religion, sex, sexual orientation, or veteran's status. Oregon State University Extension Service is an Equal Opportunity Employer.

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