ID: 78
OBJECTID: 78
FMP_NAME: Parrett
TYPE: Meta-stable River Catchments
DESC1: River systems that were not glaciated during the last glaciation and are not undergoing a period of paraglacial adjustment
DESC2: Catchment has not been glaciated previously during the Quaternary
BEHAVIOUR1: A river catchment that is generally in equilibrium with both external (e.g. climate and tectonics) and internal (e.g. geology, relief) drivers of landscape change
BEHAVIOUR2: Limited sediment fill and availability; available materials largely restricted to pre-existing valley bottom sediments (terraces, alluvium, mass-movement deposits); available materials on slopes limited to soils and rock falls
BEHAVIOUR3: Much reduced hillslope instability and sediment delivery to river systems due to limited sediment availability (due to limited occurrence of Quaternary deposits e.g. glacial deposits, river terraces)
BEHAVIOUR4:
MANAGMNT1: Fairly predictable catchment processes (scour and aggradation) under normal conditions
MANAGMNT2: Reduced sediment budgets suggest rivers may be prone to more localised and widespread scouring especially in response to high-magnitude (e.g. storms), transient events (e.g. prolonged rainfall)
MANAGMNT3: Reduced sediment budgets suggest rivers may be prone to more localised and widespread scouring especially in response to changes in catchment management practices (e.g. land-use, drainage, channel modification)
MANAGMNT4:
PRODUCT: GeoScour_v2
TIER: 1
DATASET: Catchment_Stability
DATE_ENTERED: 2025-08-06T15:58:26
QL_DATE: 2025-11-25T10:29:38
SHAPE_WGS84.AREA: 0
SHAPE_WGS84.LEN: 0