Waikato Coastal Database
Back to Search

Erosion-accretion and sedimentology of Aotea Harbour, including erosion at Pourewa Point

1. Identification information

Status
Complete
Data Collection Date
Summary
Aotea Harbour has experienced erosion since 1854 and has affected the settlement at Pourewa Point. Bathymetric charts, aerial photographs, sedimentological studies and hydraulic evidence are used to examine the processes controlling erosion and predict erosion and accretion trends in the future.
Content
Chapters of this thesis cover: Catchment geology and hydrology Bathymetry Erosional history of Aotea Harbour Surficial sediments Harbour hydrodynamics
Study Types
  • Scientific Study
Categories
  • Coastal Hazards
  • Coastal Development and Public Spaces
  • Aerial photography
  • Sediments
  • Shoreline Change
  • Bathymetry
  • Consents and Structures

2. Contact information

Commissioning Agencies
  • University of Waikato
Contact Organisations
  • University of Waikato

3. Spatial information

Geographic Coverage
Aotea Harbour
Grid Coordinates
Aotea Harbour – 2671819, 6354235, NZMG, 1:60000, AREA
Locations
  • Name
    Aotea Harbour
    NZMG Easting
    2671816
    NZMG Northing
    6354238
    Location
    Aotea Harbour
    West Coast

4. Data acquisition information

Collection Date
1980-1981
Methodology
Frequency of collection: One off study

5. Data quality information

Known Limitations
The estimated rate of shoaling within the entrance can only be approximate, and the rate of accretion of the spit could not be estimated in this study. The study suggests that to obtain a better estimate of the rate of shoaling, and spit formation, the entrance be resurveyed suing the bench-marks estimated for this study and the results compared to the bathymetry. Gaps in collection: Not reported Data quality: Not reported Attribute accuracy: Not reported Completeness: The study highlights that the determination of the average wave and the wave climate off Aotea Harbour would be useful. This would enable the estimation of littoral drift along the coast which, coupled with a knowledge of the bathymetry outside the harbour, would enable the sediment flux of the west coast sediments to be determined.

6. Distribution information

Format
report, photographs, Thesis
Applications
Availability
Thesis available in University of Waikato Library No confidentiality.

7. Status information

Data Status
Finished

8. Metadata information

General Notes
Related Links
Publications
  • Willet, R.N. 1982: Erosion-accretion and sedimentology of Aotea Harbour, with reference to the erosion at Pourewa Point. M.Sc thesis. Earth Sciences, Waikato University, Hamilton.
Related Publications
  • Aerial photographs: 839 - 1,2,3,4, 1943 840 - 1,2,3,4, 1944 2686, 2687 - 1,2,3,4, 1958 SN3730 - C,1,1, 1974 SN5479 - K,1,2,3, 1979
  • Henderson, J & Grange, L.I. 1926: The geology of the Huntly-Kawhia subdivision. Pirongia and Hauraki divisions. N.Z. Geol. Serv. Bull. n.s. 28.
  • Kear, D., 1960: Geological map of New Zealand, Sheet 4, Hamilton.
  • Heath, R.A. 1974: Circulation and hydrology off the west coast of the North Island, N.Z., between Cape Terwhiti and Kawhia Harbour. N.Z.O.I. Oceanographic Summary No. 5.
  • Pain, C.F. 1976: Late Quaternary dune sands and associated deposits near Aotea and Kawhia Harbours, North Island, N.Z. N.Z.J.G.G. 19(2).
  • Sherwood, A.M. 1973: Surficial sediments of Raglan Harbour. Unpublished PhD thesis, University of Waikato, Hamilton.
  • Sherwood, A.M. & Nelson, C.S. 1979: Surficial sediments of Raglan Harbour. N.Z.J.M.F.R. 13(4).
  • Whiting, K.S. 1979: Human adjustment to a natural hazard coastal erosion at Aotea Harbour. Unpublished directed study, Department of Geology, University of Waikato, Hamilton.
Related Datasets

9. Related files

No files have been attached to this dataset

Back to Top