Culvert Inlet Hamelin Creek · Hamelin Creek Slide File No: 2006-1002Ca13c Note: Photos taken on June 2007 Photo 1 Looking south (towards Hwy 49) at upstream portion of this creek

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2006-1002C December 2007Hwy 725

Hamelin Creek Slide

File No: 2006-1002Ca13cFile No: 2006-1002Ca13c

Note: Photos taken on June 2007Note: Photos taken on June 2007

Photo 1Looking south (towards Hwy 49) at upstream portion of this creek crossing. The view is from north valley slope- Two watercourses flowing from upstream (Hamelin Creek at right of photo) (Tributary Creek at centre of photo) to confluence at inlet of the arch culvert - Creek flows from right to left of photo- Settlement of fill embankment at culvert crossing location. Sagging of guardrail.

Photo 1aLooking south (towards Hwy 49) along highway from north valley slope- Close up view of roadway settlement caused by internal settlement and lateral spreading movements.- Undulation can be noted along slope surface

Culvert InletCulvert Inlet

Tributary CreekTributary Creek

Hamelin CreekHamelin Creek

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2006-1002C December 2007Hwy 725

Hamelin Creek Slide



Photo 2

Looking south (towards Hwy 49) at upstreamportion of this creek crossing- A close up view-The two watercourses are aligned to inflow the culvert at

0 close to a 90 angle turn to enter the arch culvert inlet which has curvature entry wing walls on both sides of the culvert inlet (see Photo# 4)

Photo 2a

Looking south along east guardrail (downstream side)- leaning of guardrail indicative of potential lateral spreading of fill- sagging of pavement indicative of fill settlement

Photo 2b

Looking south along west guardrail (upstream side)- leaning of guardrail indicative of potential lateral spreading of fill - sagging of pavement indicative of fill settlement

Culvert InletCulvert Inlet

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2006-1002C December 2007


Photo 3

Hwy 725Hamelin Creek Slide


Looking NW at upstream stretch of Hamelin Creek channel (w) and valley slopes (nw)- Slumping of bank at channel bend (erosion side), this eroded slumped bank will require stabilization - Culvert curvature wing wall (bottom left of picture)- Previous valley slope slide at right of photo

Bank SlumpingBank Slumping

Approximate Locationof Previous NW

Valley Slope Slide

Approximate Locationof Previous NW

Valley Slope Slide

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2006-1002C December 2007


Photo 4

Photo 4b

Photo 4a



Looking at curvature inlet of culvert from upstream bank of Hamelin Creek0 - Tributary creek flowing (from far side of photo) to enter culvert through a 90 turn

0 - Hamelin Creek flowing to enter culvert through a 90 turn (bottom right of photo)

Looking at erosion bank upstream of Hamelin Creek- Erosion and slumping sliding of bank slope at 80-100m stretch upstream stretch from culvert inlet

Photo 4b

Looking at Tributary creek from top of culvert- Sliding of toe of fill slope at edge of wingwall due to toe erosion of tributary creek channel riprap lining that was originally constructed. - Toe erosion and slumping is obvious as the creek channel has cut a vertical steep toe into the opposite valley slope- Part of the slope movement have been retained by the wingwall construction

Tributary CreekTributary Creek

Hamelin CreekHamelin Creek

Top Scarp of Slideat Wingwall

Top Scarp of Slideat Wingwall

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2006-1002C December 2007

File No: 2006-1002Ca10aFile No: 2006-1002Ca10a




Photo 5

Looking at inlet of culvert

Photo 5a

Looking at tributary creek channel at entry to culvert inlet- shifting of channel to opposite bank (right of photo) of natural valley slope- a steep toe was eroded along the opposite bank (right)- original riprap lining was rendered defunct as the channel has shifted to the opposite bank of the tributary creek

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2006-1002C December 2007Hwy 725

Hamelin Creek Slide



Photo 6

Looking at Hamelin Creek upstream from inlet of culvert- Steepening and slumping of opposite (left) bank of valley slope- Erosion and slumping of fill slope at bend of channel (at far end of riprap protection)

Photo 7

Looking at fill embankment from toe area from upstream bank of Hamelin Creek at close to culvert inlet location- Undulation of slope face to indicate uneven settlement of fills

Erosion atCreek BendErosion at

Creek Bend

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2006-1002C December 2007




Photo 8

Looking south along roadway and east at downstream channel - Straight (downstream) channel with infilled re-constructed bank slopes- Previous sliding of SE valley slope to right of photo

Previous SEValley Slope Slide

Previous SEValley Slope Slide

Documents

Culvert Inlet Hamelin Creek · Hamelin Creek Slide File No: 2006-1002Ca13c Note: Photos taken on June 2007 Photo 1 Looking south (towards Hwy 49) at upstream portion of this creek