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<br /> <br />EXPLANATION <br />40°06'N <br />40'04'N <br />40'02'N <br />Limit of simulated aquifer <br />40°N <br />39°56'h <br /> <br />Lined pit <br />® Unlined pit <br />Fines-backfined pit <br />- Wetland mapped as part of this study <br />- Riparian herbaceous vegetation indicated by <br />Colorado Division of Wildlife 12007a, bl <br />Simulated groundwater-level change, in feet <br />Positive values indicate groundwater-level rise. <br />Negative values indicate groundwa(er-level decline. <br />_ 8 to 10 <br />_ 6to8 <br />_ 4 to 6 <br />2to4 <br />O -2 to -2 <br />-4to-2 <br />-6 to -4 <br />-8 to --6 <br />® -10to-8 <br />0 5,000 10,000 FEET <br />0 1,000 2,000 3,000 METERS <br />Figure 36. Simulation 4-Groundwater-level changes in 2055 resulting from the potential extent of <br />reclaimed aggregate pits in 2040, Brighton to Fort Lupton, Colorado. Pits added after 2020 are simulated as <br />lined. <br />Simulated Effects of Land-Use Change and Aggregate Mining on Groundwater Flow 73 <br />Streams modified from L) S. Geological Survey National <br />Hydroglapby Dataset; 1:100,000 <br />Roads modified fiom Colorado Department of Transportation <br />North American Datum of 1983