A qualitative water-tracing experiment using the non-toxic 'Tinopal' dye was undertaken between May and November 1998 in karst terranes in the Katherine Town area. A sinkhole located 2.8km north east of Katherine River was selected as the dye injection point. The tracing test confirms a hydraulic connection between the input point and Springvale Spring and Northern Bank Spring both located on the north bank of the river. It also shows hydraulic connections to bores tapping water from the limestone aquifer. The direction of groundwater flow from the injection site is towards the east (spring G8145358) and south-east (spring G8140317). The detection of two discrete'Tinopal' peaks in Springvale Spring and Northern Bank Spring can be explained by the existence of branched groundwater flow routes. This branching would generate an initial peak from the shortest flow path and a later one originating from the longer path.,
Notes
Date:2005.,
Table of contents
Summary -- 1. Introduction -- 2. Geology -- 3. Karst Landforms of the Tindall Limestone -- 4. Hydrogeology -- 5. Isotopic Sampling -- 6. Qualitative water tracing Karst Terrane -- 7. Interpretation of Dye-Traces -- 8. Conclusion -- 9. References -- 10. Glossary -- Appendix A,
Language
English,
Publisher name
Northern Territory Government,
Place of publication
Darwin,
Series
Report no. 22/2005,
Format
58 pages : colour illustrations and maps ; 30 cm.,