{ "currentVersion": 11.4, "cimVersion": "3.4.0", "id": 0, "name": "Geomorphic Stream Condition, Recovery Potential and Priority", "type": "Feature Layer", "description": "Rivers in New South Wales display a broad range of physical forms and processes. Their form, or character, is a result of many factors including their position in the landscape, geology, land use (both current and historical), runoff and streamflow (amount and variability), sediment dynamics and vegetation. Understanding the processes and responses, or behaviour, of these systems, allows us develop ways to support and improve riverine health. Healthy rivers are critical for the plants and animals that live there, but also have important cultural, social and economic value.River Styles is a framework developed at Macquarie University that describes the physical characteristics and diversity of rivers and assesses geomorphic stream condition. It considers their capacity to adjust, sensitivity to change due to disturbance, and the pressures (natural and human) that affect their geomorphic condition. It further considers whether a river reach is likely to improve its geomorphic condition over a reasonable timeframe (normally decades) if left alone and provides guidance to help with the prioritisation of river management activities on a conservation-first basis. The four stages in the River Styles Framework, cover the description of river morphology, interpretation of behaviour, assessment of condition, prediction of river recovery potential and prioritisation of river management.Stage 1 is used to identify River 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 prioritisation for river management.Geomorphic stream condition Geomorphic stream condition at time of assessment. It indicates whether the physical form and function of the reach is appropriate and expected for the Style of river and the environmental/landscape setting in which it is found. Good condition reaches have the expected geomorphic character (physical form and features, including vegetation) and behaviour (response to disturbances and adjustments) for a particular River Style. Moderate condition reaches are noticeably impacted, typically through human disturbance. Poor condition reaches have accelerated degrading processes and lack geomorphic character expected of a reach.Recovery potentialPotential to recover from its current condition \u2013 the likelihood that a river reach will improve its geomorphic condition over management timeframes. Recovery potential is then used for prioritising river management actions. PriorityRiver reaches are prioritised for management or intervention according to condition, recovery potential and spatial relationships to other reaches which may affect, or be affected by, processes operating in adjacent reaches.IntactGeomorphic condition - Good Rate of recovery or presently occurring - No recovery occurring or required. Has not been recently disturbed or has fully recovered from past disturbances. Sediment, seed or large wood input - Appropriate for the River Style. None. High PriorityGeomorphic condition - Moderate Rate of recovery or presently occurring - Quickly if existing pressures are removed and connected to good condition upstream reaches. Or at moderate rate if disconnected to good condition upstream reaches. Sediment, seed or large wood input - May have sediment, seed or large instream wood (if required) input depending on upstream reaches. Excess sediment supply - Small sediment slugs. Moderate PriorityGeomorphic condition - Moderate to poor Rate of recovery or presently occurring - Presently occurring. Slow to moderate rate if existing pressures are removed. Sediment, seed or large wood input - Little sediment, seed or large instream wood (if required) input. Excess sediment supply - Moderate sediment slugs Low PriorityGeomorphic condition - Poor Rate of recovery or presently occurring - Very slow. No or very little recovery occurring. Often degradation still occurring. Has recently changed or is on the verge of changing to a different style category. Sediment, seed or large wood input - No sediment, seed, or large instream wood (if required) input. 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