1. ONONDAGA CREEK, NEAR SYRACUSE, NY
ONONDAGA CREEK, NEAR SYRACUSE, NY. SITE 5-D & OTHER REACHES Traffic Control Stones & Single Stone Bendway Weirs
PPT by dave derrick

2. ONONDAGA CREEK SITE 5-D Diamond-Oriented Traffic Control Stones with Single Stone Bendway Weirs

3. DIAMOND -ORIENTED TRAFFIC CONTROL STONES {TCS} WITH BEDLOAD BENCH IN BETWEEN, WITH TRANSPLANTED VEGETATION ON TOP OF TCS & BEDLOAD BENCH WITH SINGLE-STONE BENDWAY WEIRS ON EVERY 4th TCS .

4. TCS were typically 3 ft by 3 ft by 3 ft, spaced 6 to 8 ft apart, with bedload material choked in between forming a continuous bench. Vegetation was pulled down from top bank & placed on the bench. Every 4th TCS was keyed into the bank & had a single-stone Bendway Weir added to the stream end.

5. Typical stones used as Diamond Traffic Control Stones
Photo by derrick

6. Looking DS at a Diamond Traffic Control Stone-in place, but not dug in yet
Photo by Mark Schaub, OCSWCD

7. Placing a Diamond Traffic Control Stone
Photo by Mark Schaub, OCSWCD

8. Diamond-Oriented Traffic Control Stones with Single Stone Bendway Weirs
Key
TCS
TCS
TCS
Key
TCS
TCS
SSBW
TCS
TCS
TCS
SSBW
Key
TCS
SSBW
Square stones (3 ft by 3 ft by 3 ft) placed with a sharp edge facing upstream, designed to “kick” flow off the bank, must be keyed into the bed & bank, spaced 6 to 8 ft apart, every 4th one should be keyed into the bank. Every 4th stone has a Single Stone Bendway Weir.

9. Looking at a Single Stone Bendway Weir & a TCS and key stone (one more key stone needed)
Photo by Derrick

10. Diamond-Oriented Traffic Control Stones with Single Stone Bendway Weirs
Bedload material is placed between the Traffic Control Stones to form a bench at the same height as the TCS.

11. Traffic Control Stones
Bedload material placed between Traffic Control Stones
Photo by Mark Schaub, OCSWCD

12. Photo by Derrick BW BW
Looking DS at Single Stone Bendway Weirs & Diamond-Oriented Traffic Control Stones (most hidden)

13. Onondaga Creek, Site 5-D, constructed July 2006
Traffic Control Stones with a narrow bench of bedload material between. Note vertical bank above.
Onondaga Creek, Site 5-D, constructed July 2006

14. Onondaga Creek, Site 5-D, constructed July 2006 Traffic Control Stones
Bedload material placed between Traffic Control Stones

15. Diamond-Oriented Traffic Control Stones with Single Stone Bendway Weirs
Plants, root mass, and soil was pulled down from the vertical outer bank to provide streamside vegetation. The mid & upper bank was sloped and seeded.

16. Slide that veg down the slope!

17. Slide more veg down the hill
Onondaga Creek, Site 5-D, constructed July 2006

18. Slide even more veg down the slope
Slide even more veg down the slope. Note long “Instant Shade” over stream

19. 3 YEARS AFTER PROJECT COMPLETION Photos by Derrick JUNE 18, 2009

20. 3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK 6-18-2009
Looking the US key & Traffic Control Stones (TCS) & Single Stone Bendway Weirs (SSBW). Note thalweg trace. Hydraulic Cover Stone in middle of pool.
3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK

21. 3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK 6-18-2009
Close-up, looking TCS & SSBW, note thalweg. Slope at toe of bank = “come & go dynamics” erosion, then deposition
3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK

22. 3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK 6-18-2009
Single Stone Bendway Weir with Traffic Control Stone (key is hidden). Bank is stable & vegged.
3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK

23. 3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK 6-18-2009
Right bank TCS with SSBW DS of the Rocked Riffle. Bank mostly stable & vegged
3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK

24. 3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK 6-18-2009
Right bank partly hidden, TCS’s with a Single Stone Bendway Weir. Stable bank with lush veg & bedload material between TCS’s.
3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK

25. Right bank TCS & SS Bendway Weirs.
3 YEARS LATER - Onondaga Creek-Site 5-D. -DERRICK