{"id":372,"date":"2017-12-29T20:23:31","date_gmt":"2017-12-29T20:23:31","guid":{"rendered":"http:\/\/versicolor.ca\/sandylakebedford\/?page_id=372"},"modified":"2023-08-29T08:25:05","modified_gmt":"2023-08-29T08:25:05","slug":"ec-ph","status":"publish","type":"page","link":"https:\/\/versicolor.ca\/sandylakebedford\/waters\/lakes\/ec-ph\/","title":{"rendered":"EC & pH"},"content":{"rendered":"
    \n
  1. Some historical pH and electrical conductivity values for Sandy Lake:<\/strong><\/li>\n<\/ol>\n\n\n\n\n\n
    YEAR<\/b><\/td>\n1955<\/strong><\/td>\n1971<\/strong><\/td>\n1977<\/strong><\/td>\n1980<\/strong><\/td>\n1985<\/strong><\/td>\n<\/tr>\n
    pH<\/b><\/td>\n5.10<\/td>\n6.0<\/td>\n4.57<\/td>\n4.90<\/td>\n5.44<\/td>\n<\/tr>\n
    EC<\/b><\/td>\n40<\/td>\n37<\/td>\n100<\/td>\n58.9<\/td>\n141<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n\n\n\n\n\n
    YEAR<\/b><\/td>\n1991<\/strong><\/td>\n2000<\/strong><\/td>\n2001<\/strong><\/td>\n2010<\/strong><\/td>\n2011<\/strong><\/td>\n2017<\/strong><\/td>\n<\/tr>\n
    pH<\/b><\/td>\n5.29<\/td>\n5.65<\/td>\n6.3<\/td>\n7.56<\/td>\n6.12<\/td>\n6.70<\/td>\n<\/tr>\n
    EC<\/b><\/td>\n113.7<\/td>\n133<\/td>\n152<\/td>\n167<\/td>\n224.5<\/td>\n168<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n
    YEAR<\/strong><\/td>\n\u00a0 2020 <\/strong><\/td>\n\u00a02021<\/strong><\/td>\n\u00a0 2022<\/strong><\/td>\n<\/tr>\n
    pH<\/td>\n\u00a0 –<\/td>\n\u00a0 –<\/td>\n\u00a0–<\/td>\n<\/tr>\n
    EC<\/td>\n\u00a0 191<\/td>\n\u00a0 152<\/td>\n\u00a0 188<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    SOURCES
    \n2020. 2021, 2022<\/strong>: Average for 11 values over 2020, 12\u00a0 values in 2021 and 9 values in 2022; see More Monitoring<\/a>
    \n2017<\/strong>: View this website: Lakes\/    Limnological Profiles<\/a>
    \n2011<\/strong>:     Synoptic water quality survey of selected Halifax-area lakes : 2011 results and comparison with previous surveys<\/a>\u00a0 Pierre M. Clement and Donald C. Gordon.
    \n2010:<\/strong> \u00a0    HRM Water Quality Monitoring Program results – Spring 2010<\/a>
    \n2001:<\/strong>     Sandy Lake Development Impact Assessment Final Report – A Water Quality Analysis <\/a>Damon Conrad, Hany Sidhom, Steve Matthews, W. Hart 2002
    \n1980-2000<\/strong>: from     Synoptic Water Quality Survey of Selected Halifax Regional Municipality Lakes on 28-29 March 2000<\/a> by P. Clement et al., 2007. Mandell (1994)<\/a> reported similar values for 1991-1992 (average from 4 samplings, pH5,35, EC 111)
    \n1985<\/strong>:\u00a0 JACK LAKE Environmental Evaluation Final Report. Canada Mortgage and Housing Corporation & Nova Scotia Department of Housing, Sampling May 14-15.
    \n1977<\/strong>:\u00a0 Watt, W.D. et al., 1979. Acidification and other chemical changes in Halifax County lakes after 21 years. Limnology & Oceanography<\/em> 24 B: 154-161. Samples in June 1977.
    \n1971<\/strong>: Metropolitan Area Planning Committee (MAPC). 1972.     Water quality survey for selected metropolitan area lakes. 1971-1972.<\/a> Task Group on Water Supply and Waste Disposal. Halifax, NS. Feb 1972. Data for Lake 31 (Sandy Lake) all EC Data: N Inlet 57.0 S Inlet 57.0 Surface 37.0, 59 feet: 39.0, Outlet 39.0, sampled Aug 30, 1971
    \n1971<\/strong>: Observations in July 1971: pH 6.0, EC 37.0; lake area 81.8 ha; max depth 19.2 m From     DESCRIPTION OF SELECTED LAKE CHARACTERISTICS AND OCCURRENCE OF FISH SPECIES IN 781 NOVA SCOTIA LAKES<\/a>, D. R. ALEXANDER et al.1986 PROC. N.S. INST. SCI<\/em> (1986) Volume 36: Part 2, pp. 63-106\u00a0<\/span>
    \n1955<\/strong>: Gorham, E. 1957.     The chemical composition of lake waters in Halifax County, Nova Scotia<\/a>. Limnology & Oceanography<\/em> 2: 12-21. Sampled in Dec 1977. pH is average before and after aeration of the sample.<\/a><\/p>\n

    2. Values of electrical conductivity, pH and temperaturearound the perimeter of Sandy Lake on Aug 10, 2017.<\/strong><\/p>\n

    \"Lake<\/a>
    \nAbove: Values of electrical conductivity (yellow numerals; units are uS\/cm), pH (red) and temperature (red) of surface water at different locations on Sandy Lake on Aug 10, 2017<\/strong>.
    \nClick on image for larger version<\/em><\/p>\n

    The highest EC values occurred near the mouths of the 3 streams draining settled areas at the south of the lake. (view Stream Map<\/a>) (from south east to south west 203, 271\/291, and 420\/398).<\/p>\n

    —————————————————<\/p>\n

    3. Values of electrical conductivity, pH and temperature for surface waters on various dates in 2017<\/strong>.<\/p>\n

    —————————————————<\/p>\n

    \"Lake<\/a>
    \nAbove: Values of electrical conductivity, pH and temperature for surface waters on various dates in 2017<\/strong>.
    \nClick on image for larger version<\/em>
    \nNote the higher EC values for streams on the west side of the lake than on the east side of the lake and, in general, that pH values for streams are lower than values for Sandy Lake (see also figure above) except for Bob’s Brook (also known as Johnson’s Brook; it enters the lake at the southwest corner of the lake) and Peverill’s Brook flowing to Marsh Lake.<\/p>\n

    —————————————————<\/p>\n

     <\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

    Some historical pH and electrical conductivity values for Sandy Lake: YEAR 1955 1971 1977 1980 1985 pH 5.10 6.0 4.57 4.90 5.44 EC 40 37 100 58.9 141   YEAR 1991 2000 2001 2010 2011 2017 pH 5.29 5.65 6.3 … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":157,"menu_order":10,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-372","page","type-page","status-publish","hentry"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages\/372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/comments?post=372"}],"version-history":[{"count":47,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages\/372\/revisions"}],"predecessor-version":[{"id":8122,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages\/372\/revisions\/8122"}],"up":[{"embeddable":true,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages\/157"}],"wp:attachment":[{"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/media?parent=372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}