00000nam 2200000zi 4500 9.874030 CaOODSP 20241203113649 m o d f cr ||||||||||| 190531e199001##oncbd #ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-on En13-5/90-15E-PDF Painter, Scott, author. Grindstone Creek water clarity : sources and effects / Scott Painter, Lisa Hampson and Karen McCabe. Burlington, Ontario : Environment Canada, National Water Research Institute = Environnement Canada, Institut national de recherche sur les eaux, January, 1990. 1 online resource (30 unnumbered pages) : maps, graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 90-15 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "A spatial survey of water clarity identified in Grindstone Creek has identified that the sources of high turbidity in the delta are predominately the resuspension of silt in the ponds just upstream from the delta and to a lesser extent high chlorophyll concentrations. Water clarity was poorest during May and June despite an eight-week drought during that time period. Upstream Secchi disc depths were consistently greater than 1 m whereas the downstream ponds had a seasonal mean Secchi depth of only 28 cm. The poor water clarity is predicted to limit aquatic plants to only 4 ha and improvements in silt or chlorophyll concentrations could increase plant distribution to 25 ha"--Abstract. Includes abstract and management perspective in English and French. gccst Water quality gccst Aquatic plants Turbidity Hampson, L., author. McCabe, K. J., author. Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; 90-15. (CaOODSP)9.844121 PDF 1.57 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-90-15-eng.pdf