| 1. | Map showing Study Units of the National Water-Quality Assessment. (46K GIF) |
| 2. | Diagram showing phased implementation of Study-Unit Investigations. (41K GIF) |
| 3. | Diagram showing components of Study-Unit Investigations and their interrelations. (16K GIF) |
| 4. | Diagram showing components of the Occurrence and Distribution Assessments. (52K GIF) |
| 5. | Diagram showing conceptual stratification of environmental settings for the White River Basin Study Unit, Indiana. (43K GIF) |
| 6. | Map showing environmental settings of the White River Basin Study Unit, Indiana. (85K GIF) |
| 7. | Map showing example of distribution of Basic and Intensive Fixed Sites for the White River Basin Study Unit, Indiana. (80K GIF) |
| 8. | Map showing example of study designs for a Study-Unit Survey and Land-Use Study, San Joaquin/Tulare Basins Study Unit. (103K GIF) |
| 9. | Map showing typical idealized transect design for a Flowpath Study associated with a gaining stream. (28K GIF) |
| 1. | General goals of the Occurrence and Distribution Assessment. (64K GIF) |
| 2. | Relations among measurable water-quality characteristics and selected water-quality issues. (45K GIF) |
| 3. | Water-quality characteristics measured in National Water-Quality Assessment surface-water components. (40K GIF) |
| 4. | Sampling activities for characterizing streamwater-quality conditions for the Occurrence and Distribution Assessment. (63K GIF) |
| 5. | Summary of fixed-site design for the White River Basin Study Unit, Indiana. (37K GIF) |
| 6. | Analytical strategy for Basic Fixed Sites. (24K GIF) |
| 7. | Analytical strategy for Intensive Fixed Sites in addition to the Basic Fixed-Site analyses. (45K GIF) |
| 8. | National Target Taxa List for tissue bioassessment in the National Water-Quality Assessment. (39K GIF) |
| 9. | Analytical strategy for bed-sediment and tissue Occurrence Survey. (87K GIF) |
| 10. | Components and attributes of the National Water-Quality Assessment ground-water sampling design. (53K GIF) |
| Multiply | By | To obtain |
|---|---|---|
| centimeter (cm) | 0.3937 | inch (in.) |
| meter (m) | 3.281 | foot (ft) |
| kilometer (km) | 0.6214 | mile (mi) |
| square kilometer (km2) | 0.3861 | square mile (mi) |
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