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

Slow Sign and Turtle Time

THEY SAY: Information Report: April 3, 2017 SUBJECT/REPORT NO: Rare Turtle Recovery, Wildlife Corridor Issues and Roads of Issue at Cootes Paradise (PW16024a) - (City Wide) Traffic Issues on Cootes Drive Traffic Operations & Engineering has been working with the Ward 13 Councillor on traffic signage along Cootes Drive. Four (4) traffic signs (with flashing lights) operating during turtle migration season will be installed in the spring of 2017. The migration period for turtles is generally around the months of June, early July and September but can vary due to weather conditions. The traffic signs are useful in alerting motorists of potential turtle crossings on that roadway. RESTORE COOTES SAYS: Is it working? Is there any evidence that it is helping turtles or even slowing vehicles? We're betting it has little to no impact - the light is always flashing, if turtles are present or not, the road is built for speed and it makes it dangerous to slow down. We hope

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

In the beginning

I've sometimes wondered how certain plants started growing in our yard. I'm guessing seed dispersal: the wind floats some through the air, sticky burrs caught on a racoon's fur drop as they pass through at night, a nuthatch drops some seeds from its tail-end while searching for bugs on the side of a tree. The methods of delivery are varied, but the process of growth continues with time and the right conditions - rain, sun, soil -  and the wind, the racoon, the nuthatch are forgotten like the seed itself. We see goldenrod, sumach, dogwood, and it appears as though nothing preceded this moment, this forest stands inexplicably before our eyes. This is the way too with social or environmental change. Generations of germination and growth. The fruits may come after the planter has long disappeared. Like a monarch butterfly migrating - it's the generation that begins the journey that makes it possible for the next generation to arrive. I feel a little of this with the