A report on the cumulative effects of human (e.g. roads, timber harvesting) and natural forces (e.g. wildfires) on the Silverton Creek watershed has been prepared and is available here for download. The mapping and report use the benchmarks and protocol listed in the BC Government’s “Interim Assessment Protocol for Aquatic Ecosystems in British Columbia”, January 2017
Because of the size of the report it is broken into two parts, the main report and the maps which, when put into Appendix A make up the full report. The main report shows the map portion of the pdf map at smaller size so that the reader can work with the whole report without downloading the Appendix A maps. The main report can be downloaded by clicking CumulativeEffectsFramework-SilvertonBC_Report
The maps are available to download by clicking on the individual maps listed below.
Please contact Richard Johnson at firstname.lastname@example.org if you have any problems
Once again the Columbia Mountain Institute is hosting the Introduction to QGIS course. This course was held in Revelstoke in 2017 and in Cranbrook in the spring of 2018. This year the course will be again be held in Revelstoke on May 3, 2019. It will be announced on the CMI website (http://cmiae.org/) shortly.
The course shows participants how easy it is to use the QGIS program by having them import data, analyze data and produce maps. The following is an excerpt from their website:
The free, open source QGIS program is used and supported by a world-wide array of developers. Learn how to use this program to produce maps from public databases and your own knowledge. In a hands-on environment, on their own computers, students will create basic maps, add lines, shapes, overlay images, create contours, add labels and produce high quality maps for print or digital presentation.
The course can also be taken on-line, direct from Opus Petroleum Engineering Ltd. Contact us at http://www.opuspetroleum.com/index.html for more information.
Richard Johnson, Opus Petroleum Engineering Ltd.
An “Introduction to QGIS” workshop was put on by the Columbia Mountain Institute at Revelstoke on November 19th, 2017. The course was lead by Richard Johnson, president of Opus Petroleum Engineering Ltd. and founder of the Slocan Lake Research Centre. Fifteen people attended. All the feedback was very positive and we plan on putting it on again in the spring.
For the use of those that attended, we have created a pdf version of the course PowerPoint presentations. They are in greyscale but can refresh your mind. All of the attendees have Richard’s email and he will forward any of them to you at your request. Because of the size of the files you might want to get only some of them. They are titled “DEM”, “Vectors”, “Composer”, “GPS” and “Satellite” which is the order in which they were presented.
And of course Richard welcomes your continued questions and comments, on this page or by email.
SWAMP has recently acquired a Song Meter SM4 for recording bird songs and calls in the various wetlands in the Slocan Valley. These recorders are completely programmable as to when, how often and how long they record so they are ideal for archiving what birds were in the area where the recorder was deployed. This is the start of a project to document the bird use of our wetlands. We will have a permanent record of any changes in bird migration and breeding over time.
Testing of the unit in this area has resulted in the capture of the call of a Northern Saw-whet Owl just outside of New Denver. He called for several late evenings for a couple of hours each night and moves around while calling but monotonously repeats his beeping, like a persistently backing-up garbage truck. The photo is from Cornell Lab of Ornithology website.
The attached picture shows one minute of his calling via a sonogram. The horizontal axis is time, the vertical, frequency. The little yellow bars are the calls. To hear the actual calls please email me for a download or visit the MacCauley Library at Cornell Lab of Ornithology. Link: https://search.macaulaylibrary.org/catalog?q=Northern+Saw-whet+Owl+-+Aegolius+acadicus&searchField=species&taxonCode=nswowl®ionCode=&userId=
In 2016 the Slocan Lake Stewardship Society received a grant from the Columbia Basin Trust under their CIP-AAP program to perform two studies of the hydrogeology of the Silverton Creek area.
The first study examines the Silverton Aquifer, the alluvial delta upon which the Village of Silverton has been built. It relates the water in the aquifer, from which the Village gets its drinking water, to Silverton Creek and its watershed.
The second study relates the Silverton Creek watershed to the bedrock and glacial geology that have controlled its development. It then goes on the describe how this relates to the water flow and water quality.
Both reports can be download by clicking the images below.
This chart shows the lake level history since December 2014 together with the mean temperature and precipitation. These weekly measurements are being taken by Hennig von Krogh in New Denver. We will periodically update the graph and publish it on this website.
The annual Western Toad migration from Summit Lake to their winter range up the mountainside to the south has begun with the toads staging at the lakeshore. The following is from Bruce Cottingham who was at Summit Lake yesterday, August 6, 2014.
It appears that the toadlets are starting to gather in relatively limited numbers at the moment. However, apparently there are large numbers in the lake on their way to the beaches. Biggest gathering noticed was at the Day Park boat launch as per picture attached.
Western Toads staging for the migration.
The annual Summit Lake Toadfest, sponsored by the Fish and Wildlife Compensation Program, is scheduled for August 26 and 27, 2014 but the toads have their own calendar. Angus Glass, coordinator of Toadfest, reports that this is earlier than usual and “… And yes, given the hot dry weather may be best not to move any right now, especially as they do like to hang out in the staging areas, possibly for a week or more. They will be looking for rainfall for sure.”
Let’s hope for rain when the toads are ready.