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Click here for figure 1. Location of study area, Montana. Figure 1. Location of study area, Montana. (click here for pdf file)
Click here for figure 2.  Location of sampling sites in the Miller Creek watershed, Montana. Figure 2.  Location of sampling sites in the Miller Creek watershed, Montana.  (click here for pdf file)
Click here for figure 3.  The diverse character of the streambed in the Miller Creek watershed, Montana:  A.  Upper study reach (site 190) where the channel is composed of gravel and cobbles.  B.  Near mid-basin (site 7,120) where the channel is composed mostly of large cobbles and scattered boulders.  C.  Near the downstream end of the lower study reach (site 14,505) where a small waterfall exists on exposed  bedrock.  D.  At the downstream end of the study reach (site 14,930) where the channel is composed of cobbles, boulders, and woody debris.  Photographs A and D by D.A. Nimick; photographs B and C by J.H. Lambing, U.S. Geological Survey. Figure 3. The diverse character of the streambed in the Miller Creek watershed, Montana:  A.  Upper study reach (site 190) where the channel is composed of gravel and cobbles.  B.  Near mid-basin (site 7,120) where the channel is composed mostly of large cobbles and scattered boulders.  C.  Near the downstream end of the lower study reach (site 14,505) where a small waterfall exists on exposed  bedrock.  D.  At the downstream end of the study reach (site 14,930) where the channel is composed of cobbles, boulders, and woody debris.  Photographs A and D by D.A. Nimick; photographs B and C by J.H. Lambing, U.S. Geological Survey. (click here for jpg file)
Click here for figure 4.  Temporal profiles of chloride concentration at tracer-monitoring sites on Miller Creek, Montana, August 28-31, 2000. Figure 4.  Temporal profiles of chloride concentration at tracer-monitoring sites on Miller Creek, Montana, August 28-31, 2000. (click here for pdf file)
Click here for figure 5.  Downstream profile of streamflow at synoptic-sampling sites in the Miller Creek watershed, Montana, August 30, 2000. Figure 5.  Downstream profile of streamflow at synoptic-sampling sites in the Miller Creek watershed, Montana, August 30, 2000. (click here for pdf file)
Click here for figure 6.  Concentration profiles of dissolved and total-recoverable copper, total-recoverable lead, and dissolved and total-recoverable zinc in water samples collected in the Miller Creek watershed, Montana, August 30, 2000.  Aquatic-life standards from Montana Department of Environmental Quality (1999) are applicable to total-recoverable concentrations.  Standards have been adjusted for a hardness of 100 mg/L CaCO3. Figure 6.  Concentration profiles of dissolved and total-recoverable copper, total-recoverable lead, and dissolved and total-recoverable zinc in water samples collected in the Miller Creek watershed, Montana, August 30, 2000.  Aquatic-life standards from Montana Department of Environmental Quality (1999) are applicable to total-recoverable concentrations.  Standards have been adjusted for a hardness of 100 mg/L CaCO3. (click here for pdf file)
Click here for figure 7.  Concentration profiles of leachable copper, lead, and zinc in streambed-sediment samples collected in the Miller Creek watershed, Montana, August 28-31, 2000.  Canadian interim sediment quality guidelines (ISQG) and probable effect levels (PEL) typically are used to compare concentrations of elements in bulk sediment (Canadian Council of Ministers of the Environment, 1998) and are shown here for general comparison only; samples in this study were sieved to 2 millimeters and the fine fraction analyzed. Figure 7.  Concentration profiles of leachable copper, lead, and zinc in streambed-sediment samples collected in the Miller Creek watershed, Montana, August 28-31, 2000.  Canadian interim sediment quality guidelines (ISQG) and probable effect levels (PEL) typically are used to compare concentrations of elements in bulk sediment (Canadian Council of Ministers of the Environment, 1998) and are shown here for general comparison only; samples in this study were sieved to 2 millimeters and the fine fraction analyzed. (click here for pdf file)
Click here for figure 8.  Possible sources of metals to Miller Creek, Montana:  A.  The Black Warrior Mine located in the upper study reach.  B.  A natural  ferricrete deposit adjacent to Miller Creek, near site 1,850.  C.  Mine waste at Miller Creek dump 1.  D.  Left-bank inflow (site 6,465), with aluminum staining near the middle of the study reach.  This inflow had the highest total-recoverable copper concentration of any site sampled in the Miller Creek watershed during this study.  Photographs by D.A. Nimick. Figure 8.  Possible sources of metals to Miller Creek, Montana:  A.  The Black Warrior Mine located in the upper study reach.  B.  A natural  ferricrete deposit adjacent to Miller Creek, near site 1,850.  C.  Mine waste at Miller Creek dump 1.  D.  Left-bank inflow (site 6,465), with aluminum staining near the middle of the study reach.  This inflow had the highest total-recoverable copper concentration of any site sampled in the Miller Creek watershed during this study.  Photographs by D.A. Nimick. (click here for jpg file)
 

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