1. Swamp Creek: Culvert Replacements
Sokaogon Chippewa Community
Roman Ferdinand
Tribal Water Workshop – Mille Lacs
October 9, 2014

2. Swamp Creek: Culvert Replacements October, 2014
Project Locations
Problem Statement and Confirmation
Design
Permits
Construction
Side Note

3. Project Location:

4. Project Location: Swamp Creek – Class II Trout Stream, ERW and ORW; ONRW Wolf River – Class II Trout Stream, ORW, NWSR

5. Rice Lake:

6. Stream Crossings:

7. How it fits:
ASSESSMENT
RESTORATION
PROTECTION

8. Problem Statement: Perched culverts
Backwater issues (temperature, inhibited groundwater discharge, siltation, erosion, etc.)
Fish habitat modifications (spawning, passage, etc.)

9. Problem Confirmation:
Topographic survey (stream, floodplain, stream crossings)
HEC-RAS modeling (
Contracted to Inter-Fluve, Inc. ( )
Length – 6 miles, simulate 3 crossings
Cost: $25,000 Funding: WTCAC (Small Projects grant)

10. HEC-RAS: USACE Channel geometry Flow and stage data
Calibrate the model to real observations
Predictive scenarios

13. Design: Site specific topographic survey
Soil testing (bearing capacity)
Three design alternatives with cost estimates
Preferred alternative – detailed design and material/construction cost estimate
Construction bid package, proposal review and contractor recommendation
Cost: $32,000 (up to $62,000) Funding: EPA CWA 319

14. Preliminary Estimated Cost ($) Delivery Lead Time (weeks)
Opening Width
Material Type
Preliminary Estimated Cost ($)
Delivery Lead Time (weeks)
Materials*
Installation
Total
20' Clearspan
Aluminum Box
$ ,600.00
$ ,020.00
$ ,620.00
4 - 5
Concrete Box
$ ,700.00
$ ,390.00
$ ,090.00
6 - 8
30' Clearspan
Truss Bridge
$ ,000.00
$ ,000.00
$ ,000.00
$ ,700.00
$ ,190.00
$ ,890.00
$ ,300.00
$ ,210.00
$ ,510.00

15. Permits: State of Wisconsin U.S. Army Corps of Engineers
Combined Waterway Protection General Permit
Work within the existing stream crossing footprint – no wetland delineation needed.
Review process: 30 – 60 days

16. Construction: Preferred construction inspection by design engineer
Billed on time/expenses not to exceed
Cost:
Materials/Installation $110, $250,000 per site
Inspection $ 27,000 (up to $ 41,000)
estimate of 1 week per site
Funding: GLRI (through BIA)
EPA CWA 319
FWS National Fish Passage Program
Private

17. Precipitation Frequency
Finally – Side Note!
Precipitation Frequency
2 year 24 hrs
100 years 24 hrs…….

18. Precipitation Frequency
Used in engineering design:
Flood events (steam crossings)
Stormwater runoff storage (detention or seepage ponds)
SCC – 24 hour 100 years storm event – 6.5 inches

20. NOAA Atlas 14 (2013)

22. Thank you for your attention!
Have a safe trip home!