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<br />Lake Water Quality Database <br /> <br />~ <br />-= <br />Minnesota Pollution <br />Control Agency <br /> <br />S~@h <br /> <br />7'> <br />I~ <br /> <br />Gl<i~~ry <br /> <br />H<;;3e <br /> <br />\~DNR> <br />~ <br />Exit the MPCA web <br />site and search the <br />DNR Lake finder for <br />information on this <br />lake. <br /> <br />.l....-.T. <br />.. _L 1 <br /> <br />1 <br /> <br />.....- .- ,- .... <br />Full Secchi Disk data <br />1S <br />available on this lake <br /> <br />Need Help? If you <br />need help <br />understanding the data <br />in this page full <br />sUJ,JJ,Jortin~ <br />documentation is <br />available on this data <br />or you may click on <br />the links in this page <br />to get specific <br />documentation. <br /> <br />Lake Water Quality Assessment Program <br />Lake Water Quality Database <br /> <br />Lake Location Information <br />Johanna Lake <br />DNR Lake ID number: 62-0078 <br />County: RAMSEY <br />Location from nearest town: IN ARDEN HILLS <br />This lake has a total surface area of 230 acres and has a <br />maximum depth of 40 feet with the mean depth being 17 feet. <br />Johanna Lake is located in the CHF, North Central Hardwood <br />Forest ecoregion and the UMB, Upper Mississippi, river basin. <br /> <br />Swimming is Partial SUPJ,Jort. <br /> <br />i <br />_L <br /> <br /> <br />decimal <br />degrees <br /> <br />degrees <br />minutes <br />seconds <br /> <br />Latitude 450240 45.04444 <br />Longitude 931015 -93.17083 <br />X Y <br />UTM 486529 4987898 <br /> <br />A "zoom-able" map is also <br />available of this lake location <br /> <br />Lake Quality Information <br />Hydrologic Unit Code: 07010206 <br />Monitored or Evaluated: Monitored <br /> <br />Alkalinity support - is the lake threatened by acid rain? FS <br />Alkalinity: 82 (parts per million - ppm) <br />Number of alkalinity readings used to calculate mean: 109 <br />Color: 17(Platinum-cobalt Units) <br />Number of Color Readings used to calculate color: 2 <br /> <br />Mean total phosphorus: 41 (parts per billion - ppb) <br />N umber of total phosphorus measurements used to calculate <br />mean: 111 <br />Mean chlorophyll-a: 13.3 (ppb) <br />Number of cWorophyll-a measurements used to calculate <br /> <br />httn./lrl';lb ni"-:l o;:'t<;\tJ::>. mn l"'/""<T1_h;"/1V\l1,,Q\<PpQrlPnll nl?..."",,-.-17f\Q <br /> <br />Page I of3 <br /> <br />Qn/{'\1 <br /> <br />I <br />J <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />.- <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br /> <br />I <br />