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  • dmtu.org - Ridley Temperatures Summer 2009
    the summer If the loggers were simply defective there would probably be either a constant difference or more clearly erratic differences It seems more likely that they are tracking real differences in temperature but what could be causing them Spring Seeps My first thought was that maybe there are spring seeps in the creek Before we started working on the deflector above the bridge last Friday 8 21 2009 I saw rising fish and people catching them on dry flies beetles however according to logger 1 the stream temperature at that time was 74 3 degrees I found information on the PA Fish Commission web site which suggested that at those temperatures trout are unlikely to feed I thought there might be some spring seeps in those pools so today I went out and looked for them with a hand held waterproof temperature probe it stores the lowest temperature it records I started at the deflector upstream from the bridge pool project and covered the area downstream almost to the lower parking lot Although it wasn t a hot sunny day I was surprised to find the same temperature in the shallow sections and in the deep holes 68 9 degrees That was also the same temperature that logger 1 had recorded slightly earlier I am not saying that there aren t any spring seeps in the creek there probably are but I couldn t find any in that stretch which were significant enough to create a measurably cooler pocket of water I measured the feeder creek below the bridge and that is a cool 65 degrees Unfortunately it doesn t have enough volume at least not today to have any measurable impact on the pool immediately downstream of it By the way while I was taking these measurements I saw more than a few trout some of which were fairly large The bigger ones looked a little too skinny to my eye but there are definitely still more than a few trout in the creek Perhaps just one explains our data The only place where I found a measurable difference in temperature was right where logger 2 was located It was 0 2 degrees cooler Just a couple of feet downstream in a very similar area same flow same depth same cover same amount of rock the temperature was exactly the same as everywhere else The temperature I measured was 1 1 degrees warmer than what the logger recorded I may be able to explain that though The logger is in a fairly protected area under a rock overhang It is pinned as close as possible to a sandy bottom and since it was installed it had become partially buried It may be that if there is a spring seep the logger is basically sitting directly on cool water that is being filtered up through the sand In the plot above you can see that the temperatures recorded by the two loggers track one another fairly well for the

    Original URL path: http://www.dmtu.org/index2.php?option=com_content&task=view&id=10&pop=1&page=0&Itemid=7 (2016-04-24)
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  • dmtu.org - Ridley Temperatures Summer 2009
    to be greatest during August they vary differentially from day to day throughout the summer If the loggers were simply defective there would probably be either a constant difference or more clearly erratic differences It seems more likely that they are tracking real differences in temperature but what could be causing them Spring Seeps My first thought was that maybe there are spring seeps in the creek Before we started working on the deflector above the bridge last Friday 8 21 2009 I saw rising fish and people catching them on dry flies beetles however according to logger 1 the stream temperature at that time was 74 3 degrees I found information on the PA Fish Commission web site which suggested that at those temperatures trout are unlikely to feed I thought there might be some spring seeps in those pools so today I went out and looked for them with a hand held waterproof temperature probe it stores the lowest temperature it records I started at the deflector upstream from the bridge pool project and covered the area downstream almost to the lower parking lot Although it wasn t a hot sunny day I was surprised to find the same temperature in the shallow sections and in the deep holes 68 9 degrees That was also the same temperature that logger 1 had recorded slightly earlier I am not saying that there aren t any spring seeps in the creek there probably are but I couldn t find any in that stretch which were significant enough to create a measurably cooler pocket of water I measured the feeder creek below the bridge and that is a cool 65 degrees Unfortunately it doesn t have enough volume at least not today to have any measurable impact on the pool immediately downstream of it By the way while I was taking these measurements I saw more than a few trout some of which were fairly large The bigger ones looked a little too skinny to my eye but there are definitely still more than a few trout in the creek Perhaps just one explains our data The only place where I found a measurable difference in temperature was right where logger 2 was located It was 0 2 degrees cooler Just a couple of feet downstream in a very similar area same flow same depth same cover same amount of rock the temperature was exactly the same as everywhere else The temperature I measured was 1 1 degrees warmer than what the logger recorded I may be able to explain that though The logger is in a fairly protected area under a rock overhang It is pinned as close as possible to a sandy bottom and since it was installed it had become partially buried It may be that if there is a spring seep the logger is basically sitting directly on cool water that is being filtered up through the sand In the plot above you can see that the

    Original URL path: http://www.dmtu.org/index.php?option=com_content&task=view&id=10&Itemid=7 (2016-04-24)
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  • dmtu.org - Ridley Creek Deflector Project 8-22-2009
    at the right time Everyone worked hard but we were able to finish the job in less than 2 hours of working time When the work was proposed I was told we would need 5 6 tons of stone I erred on the safe side and got 5 Although I am glad we didn t have any more to move with just the four of us I think we are going to need another 5 10 tons of stone before we will be finished with this deflector The angle between the bank on the downstream side and the point of the deflector in the stream should be 60 degrees or less I am going to measure it out but I don t think we are there yet Several people have asked what the deflector is supposed to do To get a precise answer I consulted the book Better trout habitat a guide to stream restoration and management by Christopher J Hunter Tom Palmer Ellen Meloy Montana Land Reliance Trust The partial barrier to water flow deflects current towards the opposite bank By partially blocking flow the deflector causes water to back up or pile up to some degree which results

    Original URL path: http://www.dmtu.org/index2.php?option=com_content&task=view&id=8&pop=1&page=0&Itemid=7 (2016-04-24)
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  • dmtu.org - Ridley Creek Deflector Project 8-22-2009
    A little later Ed Collier got the word and pitched in with fresh muscles just at the right time Everyone worked hard but we were able to finish the job in less than 2 hours of working time When the work was proposed I was told we would need 5 6 tons of stone I erred on the safe side and got 5 Although I am glad we didn t have any more to move with just the four of us I think we are going to need another 5 10 tons of stone before we will be finished with this deflector The angle between the bank on the downstream side and the point of the deflector in the stream should be 60 degrees or less I am going to measure it out but I don t think we are there yet Several people have asked what the deflector is supposed to do To get a precise answer I consulted the book Better trout habitat a guide to stream restoration and management by Christopher J Hunter Tom Palmer Ellen Meloy Montana Land Reliance Trust The partial barrier to water flow deflects current towards the opposite bank By partially blocking flow

    Original URL path: http://www.dmtu.org/index.php?option=com_content&task=view&id=8&Itemid=7 (2016-04-24)
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  • dmtu.org - About Us
    610 459 4616 This e mail address is being protected from spam bots you need JavaScript enabled to view it Stocking Chairman Ed Metzner 484 988 1544 This e mail address is being protected from spam bots you need JavaScript enabled to view it Secretary and Treasurer Steve Capoferri 459 Claremont Road Springfield PA 19064 610 543 5852 This e mail address is being protected from spam bots you need

    Original URL path: http://www.dmtu.org/index2.php?option=com_content&task=view&id=9&pop=1&page=0&Itemid=6 (2016-04-24)
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  • dmtu.org - Thanks for Supporting DMTU
    years and this year was no different Still it was a great success and everyone seemed to enjoy the meal We should have taken a picture when everyone was eating but we were all too busy digging in to think of it We are still tracking down receipts and totaling are expenses but it looks like in addition to a good meal it was also a good fundraiser It appears we are going to net about as much as we typically have in previous annual banquet events Hopefully those who missed out this year will be able to make it next year and we will have an even bigger turnout Nearly all of the funds we raised came directly from the silent auction We thank everyone who bid on items in the auctions but most importantly we would like to thank the following business and individuals who donated goods and services for the auction A Marblehead Flyfisher MacElroy Painting O Neills Irish Flies Sky Blue Outfitters Stroup Flyfishing The Sporting Gentleman Donald Ashbrook Mark Friedrichs Bill Kracht Brian MacElroy Wendell Ozzy Ozefovich Rod Rohrbach Steve Turrisi In addition we would like to thank everyone who brought appetizers side dishes and

    Original URL path: http://www.dmtu.org/index2.php?option=com_content&task=view&id=62&pop=1&page=0 (2016-04-24)
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  • dmtu.org - 2015 Stream Cleanup
    2015 Jerry Coviello Fishing for Yellowstone Cutthroat Trout 2015 Stream Cleanup On Saturday April 18th DMTU volunteers participated in the annual CRC Stream Cleanup along Chester Creek in Aston PA Our usual site was in use so we cleaned a section farther downstream Jennifer Nichols was our CRC site coordinator Our guys filled six bags of trash and pulled four tires from the stream plus other assorted larger items The

    Original URL path: http://www.dmtu.org/index.php?option=com_content&task=view&id=61 (2016-04-24)
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  • dmtu.org - State Stocking 3-4-15
    Ed Collier John Ritterson and I were on hand to help with the stocking Also present were Officer Evancho Phil Ewaka and a few helpers Prior to the truck arrival John used Ed s sledge hammer to open a hole in the 5 ice in the middle of the bridge pool All fish were introduced to Ridley Creek through that hole Slippery conditions all along the banks and ice prevented

    Original URL path: http://www.dmtu.org/index2.php?option=com_content&task=view&id=58&pop=1&page=0 (2016-04-24)
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