Most of the data sets necessary to describe precipitation amounts, streamflow rates, ground-water levels, and water-quality characteristics (Objective 1) are in place.
(Most of the data sets necessary to describe precipitation amounts, streamflow rates, ground-water levels, and water-quality characteristics; are; in place)
Most of the data sets necessary to describe precipitation amounts, streamflow rates, ground-water levels, and water-quality characteristics
are
in place