Skip to main content

Topo the world!

I don't know why it took me so long to realize this, but after learning how to use google earth image overlay thanks to an instructional video on Youtube (where else?!), and using a hand-drawn, not-to-scale trail map as my first project (the Ghost of Coldspring Valley), it occurred to me that the problems of scale were easily solved by using a topographic map image that was to scale! I laid the topo image over google earth's satellite of the area, matching perfectly the roads and railway bed on the perimeter of the valley, and presto:
Click on link for larger image
I chose this level of opacity, so you can see the topo features of Ancaster Creek and the roads, and beneath (or through) that, the current google earth satellite of the area.

We can see how far McMaster pushed the creek out of the way to make more space for parking, and the round blue line near the centre of the image below the western end of Sanders Blvd representing the location of Binkley's Pond.

The pink line is a GPS track I made showing the path of Maria's Walk, the only surviving trail (broken only by the parking driveway road) from the Coldspring Valley Nature Sanctuary of the Royal Botanical Gardens (1958-1963).

Click on link for larger image
This screen shot is with a slighter different opacity, that reveals the google earth satellite in a bit more detail (doesn't show the GPS track for Maria's Walk)

You have no idea how thrilled I am to have figured this out!

Comments

Popular posts from this blog

Urquhart Butterfly Garden speaker series

A lovely butterfly garden is the perfect setting for this annual speaker series. August 4, 2018, Guest speaker: Doreen Nicoll You cannot have Monarch Butterflies without milkweed.  Doreen Nicoll has recently become a heroine for monarch butterflies, by insisting on her rights to grow milkweed in her naturalized garden in Burlington. Doreen  Nicoll has long understood that garden with nature and not against her is the best thing for our planet. She also knows that native plants are great at attracting butterflies and bees of all species. Doreen will be the first presenter in the Summer Series at the Urquhart Butterfly Garden and her topic will be Monarchs and Their Milkweed and naturalized gardening. She has wealth of information and is fun as well! The session will begin at 11 am Saturday on August 4 and last approximately one hour.  Please bring a chair. If it rains the session will be cancelled. For more information about the Urquhart Butterfly Garden please visit ur

stepping up the battle for trails

I share the columnist's (see below) angst about some of the trail closures in Cootes Paradise and the observation that the impacts of walking on habitat are less damaging than driving. Nevertheless, I can appreciate that some of the trails can and should be closed to preserve sensitive habitat. It is because Cootes is surrounded by a city that the impacts of both cars and yes, even feet, can cumulatively degrade the integrity of this nature sanctuary. Blocking trails with bushes generally seems to occur on "unofficial" trails, though I have   previously expressed my concern with closing trails that once provided access through Cootes to hook up with the Spencer Creek Trail in Dundas. The utility of a trail as a path to someplace, rather than just a recreational loop, means a lot to me , and I have hoped the RBG would reconsider the trails layout with this in mind. Again, with so many people accessing Cootes, on foot and on mountain-bikes, the threat

Design for nature not cars in McMaster west campus

Monday, January 20, 2020 Rethinking McMaster's West Campus Floodplain and Simple I really hope that the vision for west campus does look to rehabilitate the floodplain under McMaster Parking Lot M. In these times of global climate emergency, what better contrast than cars parked on top a coldwater wetland. One is a source of our current predicament, and the other is a part of the solution to mitigate the issues we face. Meanwhile: Trail to Trespass McMaster still has to come to terms with the fact they won't allow people currently parking in the west campus to use the perfectly lovely remnant of the former Royal Botanical Gardens nature trails to access campus. It's very odd that it was easier to get hundreds of parking spaces removed to create the required 30-metre buffer to the coldwater creek there than it is to get McMaster to stop blocking access to the trail. I'm hoping to open (another) conversation with McMaster about this trail. In the mean