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Draft North & East Metro Groundwater Management Area Plan 4-6 groundwater pumping but appear to have become stable over the last 6 to 10 years at obwell locations. An example is shown in Figure 4-4. Groundwater levels are expected to be stable or to rise if average or wet hydrological conditions prevail in the next several years and pumping rates remain stable. If dry conditions continue, we should expect additional water level drops in aquifers of the GWMA. Other historical groundwater measurements were compared to more recent measurements in the GWMA, such as water levels measured at the time of municipal well construction. Recent water levels measured in municipal wells in the northeastern part of the GWMA while they were not pumping are mostly above or close to the historical measurements made at the time of construction (Table 4-1). For the recent measurements, water levels in the pumping wells may not have fully recovered from pumping and may be lower than in the aquifer nearby. These data do not necessarily show that long term pumping influence is negligible at these locations, but the data suggest that pumping has not pushed water levels substantially outside of their historical range.The water-level measurements listed in Table 4-1 vary from 96 to 172 feet above the top of the Prairie du Chien in those wells, indicating that water levels are clearly within the safe yield thresholds (Figure 3-1). 896 -- -- -- - - - - --- ---- -- -- ----- --- --- ---- 894 - -- — -, —+ --- - - -- -- 892Ln -- ., l 1I w 890 -- _ — ,- - - - -- - - - - - - - -- Y t , ff LU 888 1 i 1 f v � k ;, II 3 886 - - - - -A- 884 ' , 882 - — ----- - —� — lan 70 Jan-75 Ian-go 3an-85 Jan-90 1an-95 Jan-00 Jan-05 Jan-10 Ian-15 Figure 4-4 Observation well hydrograph (2012),Jordan aquifer, southern Anoka County P64