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<br />Lake Water Quality Database <br /> <br />~ <br />~ <br />-= <br />Minnesota Pollution <br />Control Agency <br /> <br />S~yr1 <br /> <br />"~",,\ <br />I"~ <br /> <br />c~'" <br />G10;~.4)ry' <br /> <br />H,,;.rle <br />,od <br /> <br />\"'rDNR> <br />L---....::' <br /> <br />Exit the MPCA web <br />si te and search the <br />DNR Lake finder for <br />information on this <br />lake, <br /> <br />em'-'r .L 1 1 <br /> <br />a.;=--------,= ,_ ._ ..., <br />Full See chi Disk data <br />lli <br />available on this lake <br /> <br />Need Help? If you <br />need help <br />understanding the data <br />in this page full <br />supporting <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 />1. ~._ __ II _I ~ L_ <br /> <br />Page I of3 <br /> <br />Lake Water Quality Assessment Program <br />Lake Water Quality Database <br /> <br />Lake Location Information <br /> <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 hasin. <br /> <br />Swimming is Partial Support. <br /> <br /> <br />degrees <br />minutes <br />seconds <br /> <br />decimal <br />de grees <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 hy 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 />Number of total phosphorus measurements used to calculate <br />mean: 111 <br />Mean chlorophyll-a: 13.3 (ppb) <br />Number of chlorophyll-a measurements used to calculate <br /> <br />, .,' 11'. _r\on _ _ ..1"r:__11 __1"'___. 1"'T".. <br /> <br />0''"''''-1 <br /> <br />I <br />I <br />, <br />I <br />I <br />I <br />I <br />I <br />I <br />II <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />.. <br />I <br />