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Draft North & East Metro Groundwater Management Area Plan 4-7 Table 4-1 Historical and recent water levels in older municipal wells Date of Date of Difference in Well Historic Synoptic Water Level city Unique No. A uifer s 1 Measurement Measurement feet North St. Paul 208222 PCJ 1942 3/30/2011 11 North St._Paul 208223 PCJ 1942 3/30/2011 4 North St. Paul 205744 CJDN 11/23/1964 3/30/2011 13 North St. Paul 208224 CJDN 12/0/1957 3/30/2011 -9 White Bear Lake 14005 CJDN 8/14/1959 8/28/2012 21 White Bear Lake 2265672 CJDN 6/2/1965 3/30/2011 -2 White Bear Lake 205733 PCJ 3/31/1966 3/30/2011 7 White Bear Lake 226566 PCJ 1969 3/27/2012 20 White Bear Twp. 226570 CJDN 9/1956 8/9/2011 712 Vadnais Heights 224790 PCJ 11/1972 3/29/2011 -6 Lino Lakes 240171 PCJ 11/10/1971 3/24/2011 -1 208507/ Mahtomedi 2085063 PCJ/CJDN 1933 8/9/2011 -26 Oakdale 208454 1 CJDN__+ 6/24/1969 3 28 2011 5 Oakdale 208462 CJDN 10/1998 3/28/2011 0 Oakdale 208463 CJDN 4 20 1964 3 28 2011 4 'Aquifer codes: CJDN (Jordan), PCJ (Prairie du Chien and Jordan) z This is a standby or backup well that has not been pumped in recent years. 3 Historical measurement in an adjacent well that has been sealed. Available Groundwater Model Results Computer or numerical models of groundwater systems can provide valuable insights and predictions of changes that might result from changing climate and pumping. Several regional computer groundwater flow models that include the North & East Metro GWMA have been developed since the late 1980s. A new, regional model (Metro Model 3)was released June 201411. The model covers an 11 county area, and should not be used directly for more local decision making. However, the model provides a starting point for subregional or local analysis of aquifer conditions and effects of climate and cumulative groundwater appropriations.A local refinement of Metro Model 3 is planned by the Met Council and the U.S. Geological Survey(USGS)for the northeastern Metro area. The local refinement will provide valuable information about potential effects of pumping and weather variability in the GWMA. Ecosystems and Surface Waters Groundwater pumping rates may result in negative impacts to some surface waters, recreational and other uses of those resources, and their ecological communities. Several types of surface waters and wetlands that are potentially vulnerable to natural variations (drought)and to groundwater pumping influence were identified in Section 2.These include designated trout streams, non-designated trout 11 Metropolitan Council, 2014.Twin Cities Metropolitan Area Groundwater Flow Model Version 3.0: prepared prepared by Barr Engineering. P65