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2018 ANNUAL REPORT <br />Vadnais Lake Area Water Management Organization <br />Water Monitoring <br />INTRODUCTION <br />VLAWMO's regular water quality monitoring program includes nutrient sampling <br />on 6 Lambert Creek sites, and nutrient sampling on 12 of the Vadnais Lake <br />Area Watershed lakes. Nutrients and pollutants sampled for data include: total <br />phosphorus, chlorophyll -A, soluble -reactive phosphorus, iron, total nitrogen, nitrate, <br />total suspended solids, and chloride. VLAWMO's specialty monitoring programs, such <br />as E coli and winter chloride sampling, will continue. See the 2016 Annual Report <br />Summary for a map of monitoring locations. <br />Part of VLAWMO's water monitoring includes rainfall measurements because rainfall <br />and the timing of rainfall are factors that influence water quality.Typically, more <br />precipitation implies more water runoff, which carries more contaminants from the <br />land surface into water bodies. <br />Lakes are summarized with a grading system called the Trophic State Index <br />(TSI).This system was developed in the 1970's to calculate average phosphorus, <br />chlorophyll -A, and Secchi disk readings, and generate a summarizing number. Letter <br />grades are developed from the Metropolitan Council matrix for annual. averages. <br />VLAWMO Monitoring Locations <br />2018 Monitoring <br />creek sampling <br />0 lake sampling <br />special studies <br />sampling <br />o <br />0 '/4 '/2 <br />itltltttl <br />TM? Ci4g7-thrk <br />I'�1,:7�r.Y13 <br />Sources MNDNR. MMrop .n uncil <br />MNGSC. Remaey Cty. VLAWM ESRI <br />1 Miles <br />ralLYtisirw 1 <br />NORTH <br />OAKS <br />0 <br />=n-fe:r <br />81)ell7-rrr <br />96 <br />VADNAIS <br />HEIGHTS <br />LINO <br />LAKES <br />W87WP <br />li.(1(Z:T.7 <br />rues ��EEsi F1ELjE.DBjErrtr l r'St p- crmeent P' Corp7t-EB(,OTUSGS <br />FAO. NPS. NRCAN, G 6Base. IGN. KadasterNL. Ordnance Survey, Esn Jaoar <br />METI. es China (Pimp Kong), swisstcpo. Mapmyintlia. ^`� OpenStreetMap <br />cmtrlbut s and the GIS User Community <br />Monitoring results are used to guide local water policies and <br />management, and to help prioritize and locate future water <br />quality projects such as raingardens, underground retention <br />basins, and shoreline restorations. The full 2018 monitoring <br />report is available at: vlawmo.org/resources <br />VLAWMO staff monitoring Lambert Creek <br />18 <br />