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Layer: Hawkesbury Nepean (ID: 5)

Name: Hawkesbury Nepean

Display Field: HYDRO_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: The River Styles Framework is an approach to the geomorphic analysis of river systems, developed at Macquarie University. Use of all four stages of the Framework provides coherent, scaffolded baseline information for use in river management practice. Stage 1 is used to identify river types (Styles) and interpret their forms, processes, behaviour, patterns in catchments and controls on their character and behaviour. Stage 2 is used to interpret geomorphic condition in the context of river evolution. The data can be used to describe the extent to which the river has been altered relative to an expected reference condition and to identify causes of deterioration or improvement. Stage 3 places each reach within its catchment context to analyse river recovery potential, based on the connectivity of reaches within that catchment. The data can be used to identify trajectories of geomorphic recovery and likely timeframes for recovery. Stage 4 provides an approach to vision-setting and conservation first and recovery-based prioritisation for river management. The geodatabase provided in this package reflects the roll-out of the River Styles Framework across NSW. The database contains 5 spatial layers. Layer 1 presents the distribution of River Styles, Layer 2 the geomorphic condition of rivers and Layer 3 recovery potential. Layer 4 is a further derivative layer that is an extension of the River Styles Framework. It presents an analysis of River Styles fragility developed by DoI Water. This layer can be used to describe the sensitivity to disturbance of each River Style. Layer 5 presents the results of prioritisation. The River Styles Framework is described in detail in:Brierley, G. and Fryirs, K. (2005). Geomorphology and River Management: Applications of the River Styles Framework. Blackwell Publishing, Chichester, UK.The procedure to identify geomorphic condition is explained in: Fryirs K (2015) Developing and using geomorphic condition assessments for river rehabilitation planning, implementation and monitoring. WIRES Water, 2:649-667. doi: 10.1002/wat2.1100The procedure to identify geomorphic recovery potential is explained in: Fryirs K., Brierley G. (2016) Assessing the geomorphic recovery potential of rivers: forecasting future trajectories of adjustment for use in management. WIRES Water, 3:727-748. doi: 10.1002/wat2.1158The River Styles naming convention used in the database is outlined in: Fryirs K., Brierley G. (2019) What’s in a name? A naming convention for geomorphic river types using the River Styles Framework. PLoSONE. 13(9):e0201909. https://doi.org/10.1371/journal.pone.0201909.Stage 1 is taught as a professional short course for accreditation through Macquarie University. Other training options are also available (see www.riverstyles.com).**********************************************************************************Field headings created and populated within each feature-class include:**********************************************************************************[HYDRO_NAME]The name of the Hydroline. [HYDRO_TYPE]The type of Hydroline. Examples include: River, Creek etc. [STREAM_ORDER]For internal use only – not for further distribution. Whilst majority of feature classes are unpopulated, some fields contain a Strahler classification ingested from a previous DOI Water unpublished program. Consideration will be given to further release in the future. [RIVER_STYLE_CODE]This is the numerical valley setting class based on confinement. Examples include: 0 CVS, 1 – CVS T, 2 – LUV CC, 3 – LUV DC, 4 – PCVS. [CONFINEMENT_LEVEL]This is abbreviated valley setting class based on confinement. This is a primary control on river adjustments. i.e. Whether the river can move laterally on the valley bottom. Examples include: CVS - Confined Valley Setting, LUV CC - Laterally Unconfined Valley Setting – Continuous Channel, LUV DC - Laterally Unconfined Valley Setting – Discontinuous Channel, PCVS - Partly Confined Valley Setting. [MARGIN_CONTROL]This notes the type of confining feature. Examples include: Bedrock, Terrace Fan, Dune.[PLANFORM_DESCRIPTOR]This is the pattern of the river as if viewed from above. It normally includes the number of channels, the sinuosity of channels and an interpretation of the lateral (in)stability of the channel(s) Examples include: low sinuosity, meandering, anabranching and discontinuous. [FLOODPLAIN]This is the presence and extent of any floodplain that occurs along the channel banks. Examples include: Multi-channel Continuous, Planform Continuous, Discontinuous scarp, Valley fill, Discontinuous (pockets) etc.[FULL_BED_MATRIX_DESCRIPTOR]This is a descriptor of the bed material texture. Examples include: Bedrock, Boulder, Cobble, Gravel, Sand, Fine grained. [RIVER_STYLE_DESCRIPTION]General description of River Style or old name of River Style. Examples include: Floodplain pockets, gravel; Headwater, Planform controlled, Bedrock controlled, Gorge, Cut and Fill etc.[RIVER_STYLE]General description of River Style or old name of River Style, including valley setting. Examples include: CVS - Floodplain pockets, gravel; CVS - Headwater, PCVS - Planform controlled, PCVS - Bedrock controlled, CVS - Gorge, LUV DC - Cut and Fill.[RIVER_STYLE_FULL_NAME]This is the full, verbose name of the river reach using the River Styles naming convention published in Fryirs and Brierley (2018).[RIVER_STYLE_ABBREVIATED_NAME]This is the abbreviated name of the river reach using the River Styles naming convention published in Fryirs and Brierley (2018) [STREAM_CONDITION]This is the geomorphic condition of the river at time of assessment. It indicates whether river character (structure) and behaviour (function) is appropriate and expected for the type of river and the environmental/landscape setting in which it is found. Expected reference conditions are identified for each River Style and reaches of the same River Style assessed against them. Output is: Good, Moderate, Poor.[RECOVERY_POTENTIAL]This is the trajectory of adjustment a reach is likely to take. Recovery is defined as an improvement in geomorphic condition. Recovery potential is defined as the likelihood that a river reach will improve its geomorphic condition over management timeframes. Output is: High recovery potential, Rapid recovery potential, Moderate recovery potential, Low recovery potential, Strategic, Conservation etc. Recovery potential is then used for conservation and prioritisation.[FRAGILITY]This is the propensity of a river channel to change shape, location, or condition when disturbed. Examples include: High, Moderate, Low.[BED_MATERIAL_AFFECTOR]If applicable, this identifies likely or actual threatening process to the river bed or channel. Examples include: Bedrock, Boulder, Cobble, Gravel, Sand, Fine grained.[NOTES]Additional notes regarding a segment of river.[LIKELY_CONDITION_CHANGE]If applicable, this is the potential for a river to move from one geomorphic condition class to another.[CONFIDENCE]This reflects the ability to use remote sensing imagery and field work to verify River Style, geomorphic condition, and recovery potential. Examples include: High, Moderate, Low.[REFUGIA]This is the kind of habitat that the reach provides particularly for threatened species. Examples include: Disconnected pool, potential, Isolated pool, etc.[CATCHMENT]This is the particular river basin that the feature class resides in.[REPORT]This is a reference to a written River Styles report.[DATE_COMPLETED]This is the date that the spatial mapping was completed.[CREATED_USER]This is the user who entered the data.[CREATED_DATE]This is the date the data was entered.[LAST_EDITED_USER]This is the user who last entered the data.[LAST EDITED DATE]This is the date the data was last entered.[Shape_Length]This is the length of the reach for which data has been entered.

Copyright Text: Fergus Hancock & James Petrovic

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