Open House Colliery Dam Removals & Park Naturalization CITY OF NANAIMO www.nanaimo.ca/goto/dams T H E H A R B O U R C I T Y Colliery Dam Removals & Park Naturalization
Dam Removal... Purposes of Open House 1. Dam Removal Rationale To Bowen Park Reception Centre Harewood To Bowen Park Reception Centre F I F T H S T 2. Emergency Planning @ @ @ @ @ @ @ E HAMILTON AVE Points of Interest V WINCHESTER AVE STIRLING AVE A BRUCE AVE E A V I G A R D O VICTORIA RD R E A G T for Evacuation Area W S DUKE ST @ L O O H ¢ ¢ C ¢ I S I X T H S T N SIXTH ST @ @ @ @ @ E John Barsby V A Evacuation Routes Secondary School K R A HEWGATE ST P @ @ C A R L I S L E S T To Beban Park Reception Centre @ To Beban Park Reception Centre @ @ @ TIRLING AVE S E V E N T H S T @ S E V E N T H S T @ @ ¢ @ I S N O V A S T L @ N AVE @ A @ E @ @ 3. What will the Park @ @ @ @ @ @ @ @ ¢ ¢ look like after the @ @ @ dams are removed @ @ ¢ @ @ @ (Park Naturalization) @ @ @ @ @ @ Southgate Mall @ @ CITY OF NANAIMO www.nanaimo.ca/goto/dams T H E H A R B O U R C I T Y Colliery Dam Removals & Park Naturalization 2 @ @ @ @ O
Introduction... The need to remove the Lower & Middle Colliery Dams On Monday, October 29, Nanaimo City Council 0 100m HAREWOOD ROAD PARKWAY TRAIL NORTH CONTINUES NORTH AVENUE informed the community of their approval of an WAKESIAH AVENUE T S E R C L L D I H O administrative recommendation to undertake G DEPARTMENT OF W O NATIONAL DEFENCE SERVICE O D ROAD SIXTH STREET R O f A D q WASHROOM MAIN PARK PARKING 3 R D BRIDGE & ENTRANCE the removal of the Lower and Middle Colliery KIOSK N A N A I M O L A K E S R O A D CHASE ROCKWALL q MIDDLE COLLIERY DAM RIVER FALLS TRAILS S E = C T I O Dams located in Colliery Dam Park along with SPILL WAY LOOP 1 DISTANCE N LOWER LAKE WESTBROOKE 1153 METRES Tv LOWER COLLIERY DAM THE LINE THROUGH THE CENTER OF THE MORRELL LAKES SHOWS THE APPROXIMATE CENTER f LINE OF THE ORIGINAL CHASE RIVER . NATURE q (PRE - 1910) SANCTUARY BEACH AREA the naturalization of the Chase River through COLLIERY DAM PARK PARKVIEW TRAIL TO UPPER DAM = MIDDLE LAKE Tv O A K BOARDWALK HILLS VISTA the park. This decision was based on engineering TRAIL TO CANYON DOGWOOD STAIRS P A R K S I Y CRES D ROAD E WAY PARK H LOOP 2 DISTANCE 810 METRES DRIVE O L CANYON BRIDGE L R Y R S A H E G NEW ENERGY RECOVER FACILITY I N L N I L assessments which concluded the dams have M E L G JANES PARK NEW RESERVOIR #1 D O O W LINWOOD E PARKWAY TRAIL R A H CONTINUES SOUTH K E N FISH HATCHERY BROOKFIELD T W M O R CRESCENT CITY OWNED LAND R E L L P L O reached the end of their service life. O N A N A I M O P A R K W A Y LANE D FOR DISCUSSION W PARK OPERATIONS A SOUTHLAND WAY Y NUMBER ONE CRESCENT C I R C L E BENSON RD RESERVIOR & DAM COLLIER MT WHISTLER PL The public is advised: UPPER COLLIERY DAM TRANS CANADA TRAIL • Each dam is currently stable; however, should the region experience a significant earthquake or extreme rainfall event, the dams may fail resulting in a short notice evacuation of Harewood. • The Province’s Dam Safety Branch regulations accordingly require the City of Nanaimo to remedy this risk. Considered all options, including reinforcing or rebuilding the dams, removing each structure and re naturalizing the Chase River Valley were deemed the safest long-term solutions . CITY OF NANAIMO www.nanaimo.ca/goto/dams T H E H A R B O U R C I T Y Colliery Dam Removals & Park Naturalization 1
Introduction... Removing the dams The City of Nanaimo’s Engineering and Public 0 100m HAREWOOD ROAD PARKWAY TRAIL NORTH CONTINUES NORTH AVENUE Works Department has initiated steps to remove WAKESIAH AVENUE T S E R C L L D I H O the Lower and Middle Colliery Dams. G DEPARTMENT OF W O NATIONAL DEFENCE SERVICE O D ROAD SIXTH STREET R O f A q D WASHROOM MAIN PARK PARKING 3 R D BRIDGE & ENTRANCE KIOSK N A N A I M O L A K E S R O A D The current target date to commence CHASE ROCKWALL q RIVER MIDDLE COLLIERY DAM FALLS TRAILS S E = C T I O SPILL WAY LOOP 1 DISTANCE N LOWER LAKE WESTBROOKE 1153 METRES Tv LOWER COLLIERY DAM deconstruction is summer 2013 . THE LINE THROUGH THE CENTER OF THE MORRELL LAKES SHOWS THE APPROXIMATE CENTER f LINE OF THE ORIGINAL CHASE RIVER . NATURE q (PRE - 1910) SANCTUARY BEACH AREA COLLIERY DAM PARK PARKVIEW TRAIL TO UPPER DAM = MIDDLE LAKE Tv O A The steps are as follows: K BOARDWALK HILLS VISTA TRAIL TO CANYON STAIRS P DOGWOOD A R K S I Y CRES D E WAY ROAD PARK LOOP 2 DISTANCE 810 METRES H DRIVE O L L CANYON BRIDGE R Y R S A H • Drain the water E G I NEW ENERGY RECOVER FACILITY N L N L I M E L G JANES PARK NEW RESERVOIR #1 D O O W LINWOOD E PARKWAY TRAIL R A H CONTINUES SOUTH K E N FISH HATCHERY T BROOKFIELD W CRESCENT CITY OWNED LAND M O R R E L L P L O O N A N A I M O P A R K W A Y • Dam Removals LANE D FOR DISCUSSION W PARK OPERATIONS A SOUTHLAND WAY NUMBER ONE Y C I R C L E CRESCENT BENSON RD RESERVIOR & DAM COLLIER MT • Re naturalization & Planting WHISTLER PL UPPER COLLIERY DAM TRANS CANADA TRAIL Background on the dam structures The Lower and Middle Colliery Dams were built by the mining industry in 1911 to provide a supply of water to wash coal. When coal mining ceased operation in Nanaimo, the dam lakes became recreational amenities. These dams are over 100 years old and no longer meet safety standards and must be removed. CITY OF NANAIMO www.nanaimo.ca/goto/dams T H E H A R B O U R C I T Y Colliery Dam Removals & Park Naturalization 2
Dam Removal... Questions & Answers Where are the Middle and Lower 0 100m HAREWOOD ROAD PARKWAY TRAIL NORTH CONTINUES NORTH Colliery Dams located? AVENUE WAKESIAH AVENUE T S E R C L L D I H O G DEPARTMENT OF W O NATIONAL DEFENCE SERVICE O D ROAD SIXTH STREET The Lower and Middle Colliery Dams, also known R O f A q D WASHROOM MAIN PARK PARKING 3 R D BRIDGE & ENTRANCE KIOSK N A N A I M O L A K E S R O A D as the Chase River Dams, are located in Colliery CHASE ROCKWALL q RIVER MIDDLE COLLIERY DAM FALLS TRAILS S E = C T I O SPILL WAY LOOP 1 DISTANCE N LOWER LAKE WESTBROOKE Dam Park, adjacent to Nanaimo Lakes Road, south 1153 METRES Tv LOWER COLLIERY DAM THE LINE THROUGH THE CENTER OF THE MORRELL LAKES SHOWS THE APPROXIMATE CENTER f LINE OF THE ORIGINAL CHASE RIVER . NATURE q (PRE - 1910) SANCTUARY BEACH AREA COLLIERY DAM PARK of Sixth Street and north of Seventh Street. The PARKVIEW TRAIL TO UPPER DAM = MIDDLE LAKE Tv O A K BOARDWALK HILLS VISTA Park is best accessed from the parking lot at Sixth TRAIL TO CANYON STAIRS P DOGWOOD A R K S I Y CRES D E WAY ROAD PARK LOOP 2 DISTANCE 810 METRES H DRIVE O L L CANYON BRIDGE R Y R and Wakesiah. S A H E G I NEW ENERGY RECOVER FACILITY N L N L I M E L G JANES PARK NEW RESERVOIR #1 D O O W LINWOOD E PARKWAY TRAIL R A H CONTINUES SOUTH K E N FISH HATCHERY T BROOKFIELD W CRESCENT CITY OWNED LAND M O R R E L L P L O O N A N A I M O P A R K W A Y LANE D FOR DISCUSSION Why do we need to remove the W PARK OPERATIONS A SOUTHLAND WAY NUMBER ONE Y C I R C L E CRESCENT BENSON RD RESERVIOR & DAM COLLIER MT dams? WHISTLER PL UPPER COLLIERY DAM TRANS CANADA TRAIL The dams are at the end of their service life - they are one hundred years old. Recent studies have shown that they pose an unacceptable risk to the community living downstream during a significant earthquake or extreme rainfall event. What are the future uses of Colliery Dam Park once the dams are removed? Colliery Dam Park is currently used as a natural recreational area. This use is not anticipated to change in any way. The park is a well loved area and a jewel of south Nanaimo. With input from residents, the City will return the Chase River within the park to its natural state. What is the current condition of the dams? The dams are stable in their current state; however a disturbance due to a significant earthquake or extreme rainfall event could negatively affect them. As noted, the dams have reached the end of their service life; hence it’s prudent to remove them before they degrade. CITY OF NANAIMO www.nanaimo.ca/goto/dams T H E H A R B O U R C I T Y Colliery Dam Removals & Park Naturalization 3
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