grand river floodwalls historic easements and asset … · 2017. 6. 8. · fishbeck, thompson, carr...
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FISHBECK, THOMPSON, CARR & HUBERe n g i n e e r s | s c i e n t i s t s | a r c h i t e c t s | c o n s t r u c t o r s
GRAND RIVER FLOODWALLSHISTORIC EASEMENTS AND
ASSET MANAGEMENTI M A G I N C O N F E R E N C E
J U N E 6 , 2 0 1 7
M I C H E L L E L A Z A R , P E , G I S P
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Grand River
270 miles from Jackson to Grand Haven
Grand River Watershed
5,660 square miles
Land use
53% agricultural
27% urban
20% forest
THE GRAND RIVER
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WHY ARE THERE “RAPIDS” IN GRAND RAPIDS?
Lake
Mic
hig
an
Upper Reach Rapids Lower Reach
5,000 ft 40 miles
579 ft
595 ft
Ele
va
tion
Mean Lake
El. 579.3 ft
Lake
Mic
hig
an
Upper Reach Rapids Lower Reach
5,000 ft 40 miles
579 ft
595 ft
Ele
va
tion
Mean Lake
El. 579.3 ft
Lake
Mic
hig
an
Upper Reach Rapids Lower Reach
5,000 ft 40 miles
579 ft
595 ft
Ele
va
tion
Mean Lake
El. 579.3 ft
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1868
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2016
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The permanent establishment of dock, safety, sanitary, and building lines along the…Grand River…within the City of Grand Rapids.
Property owners continued to fill in property along the Grand River (the railroad built a line along the river), narrowing the river and increasing risk of flooding.
MICHIGAN LEGISLATURE PUBLIC ACT 358 OF 1891
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GRAND RIVER FLOOD 1883LOG JAMS
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GRAND RIVER FLOOD 1883LOG JAMS
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GRAND RIVER FLOOD 1883CITIZEN’S TELEPHONE CO. BUILDING
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GRAND RIVER FLOOD OF 1904
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FLOOD PROTECTION CONSTRUCTION
1907- 1915
(FIRST ROUND)
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O u t o f c o n c e r n o v e r i n s t a l l i n g a t r u n k s e w e r i n M a r k e t A v e n u e , t h e C i t y i n s t a l l e d t h e s e w e r a l o n g t h e d o c k l i n e w a l l . ( 1 2 ’ x 1 3 ’ b o x )
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FLOOD PROTECTION CONSTRUCTION
1997- 2003
(SECOND ROUND)
• Raise flood protection system to 1’ above the 100-year flood elevation (1982 FEMA model).
• Everyone has federal flood insurance.
• Everyone is happy.
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• Freeboard improvements
• Backflow protection
• Interior drainage and pump stations
• Wall rehabilitation
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2 0 1 3
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P U B L I C M U S E U M
G V S U E B E R H A R D C E N T E R
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The intern! 2013-2014, researched City archives, common council records, register of deeds, etc. and identified all historic dockline documents. Created GIS polygons for each historic parcel.
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FLOOD PROTECTION CONSTRUCTION
2015- 2017
(THIRD ROUND)
• Post Katrina- Raise Flood Protection System from 1’ to 3’ above the 100-year flood elevation. If not, homeowners would lose federal flood insurance.
• This is unreasonable.
• Compromised reached in 2015.
• Freeboard improvements.
• Backflow protection.
• Wall rehabilitation.
• Asset management plan.
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Habitat enhancement
12 acres of limestone bedrock shoals for sturgeon spawning
5 times the increase in species diversity
Recreational enrichment
2.5 miles of drift boating reach, downstream passage of paddle and oar boats
400 meters of International Canoe Federation local merit slalom course
Aesthetic improvements
2 new riverside parks
4 acres of native riparian forest
GRAND RIVER RESTORATION PROJECT
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RESTORE THE RAPIDS
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A R C M A P D E M O
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• Follow up by City
– Published services for AGOL
– Simplified access for managers through web map
– Field access
• Next steps
– Create inspection forms
– Survey 123 vs. Collector
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THANKYOU
FISHBECK, THOMPSON, CARR & HUBERe n g i n e e r s | s c i e n t i s t s | a r c h i t e c t s | c o n s t r u c t o r s