2.2.3 Analysis

       Plate Forest Types, Significant Trees and Salmonid Bearing Waterways on Burnaby Mountain display an overlay of salmonid bearing waterways and their catchment areas with forest cover diversity on Burnaby Mountain. As can be seen on Plate Streams and Major Watersheds, several streams - Cougar Creek, Submarines Creek, and Stoney Creek - radiate around the northeast region, through an area of forest dominated by significant trees. This region has the greatest diversity of vegetation and habitat. Development in this area may have a potential impact upon the headwaters of the streams. For instance, with greatly reduced vegetation and the introduction of non-porous surfaces, (asphalt, concrete, etc.), it is expected that there will be increased runoff into the streams. This may cause flooding and erosion and jeopardize the stability of downstream creek channels (Kerr Wood Leidal Associates, 1996).

       In Plates Fish Bearing Streams and Significant Streams Affected by the IBI Group Conceptual Site Plan and Fish Bearing Streams and Significant Streams Affected by the Hotson-Bakker Architects Eagle River, Silver Creek and their tributaries fan through a large portion of the southern area, through low-density residential developments adjoining Naheeno Park. Both the IBI Group and Hotson Bakker concept plans have developments situated overtop of the headwaters of Eagle River. During the process of construction, wet ponds, which serve to intercept urban runoff, may allow sediment discharge into the streams and allow heating of the water - both of which are lethal to salmonids (Bruce Leighton, SCEC, personal correspondence; Kerr Wood Leidal Associates, 1996).

       In Plate Slope and Stream Buffer Analysis, buffer zones are placed around major waterways, and slope calculations for the surrounding area are calculated, showing major ravine systems. Riparian zones are essential for maintaining the health of the streams and reducing negative impacts upon the fish downstream. Naheeno Park will have a development setback of 7.5 metres (26 feet) from the top of the stream bank for a total 30 metre (100 foot) setback. (BMDC, 1996).

<< previous page  · next page >>