Hi All, We are working on a large sub-watershed mine dewatering model using MODFLOW-USG where we have to change material properties with time. To do so we are conducting 1 year simulations and stop the model, change the material properties in a new model and read in the previous model heads as starting heads for the next year of dewatering. Although this is somewhat combersome it is working fairly well. Where we are runnigng into a snag is we are using the stream package, which makes it necessary to change the stage in the stream package based on the calculated stream stage from the previous model run. Any help on how to import (copy/paste) the calculated stage from a previous run is appreciated. Cheers - Greg B.