Table 2.7.1 Resource status and trends summary for dryland salinity Hydrozone Summary Risk Groundwater Confidence in Confidence in Trends condition trend number 1 Kalbarri Extent of salinity very minor. Salinity could Moderate Variable Adequate Limited evidence Sandplain develop in the medium term. Variable quality evidence or limited trends in groundwater levels. and high level of consensus consensus 2 Northampton Extent of salinity minor and unlikely to Low Deteriorating Adequate Adequate Block expand. Mostly rising groundwater trends quality evidence quality evidence as levels recover from drought. and high level of and high level of consensus consensus 3 East Extent of salinity minor but will almost High Deteriorating Adequate Adequate Sandplain certainly develop in the medium term quality evidence quality evidence because groundwater trends are mostly and high level of and high level of rising. consensus consensus 4 Irwin Terrace Extent of salinity moderate, no imminent Moderate Variable Limited evidence Adequate threat of expansion. Variable trends in or limited quality evidence groundwater levels. consensus and high level of consensus 5 Arrowsmith Extent of salinity Salinity could Low Variable Limited evidence Adequate develop in medium term. Variable trends in or limited evidence groundwater levels. consensus and high level of consensus 6 Dandaragan Extent of salinity minor but actively High Deteriorating Limited evidence Adequate Plateau spreading with mostly rising trends in or limited evidence groundwater levels. Large area of high consensus and high level of agricultural land at risk. consensus 7 Northern Zone Salinity is extensive and continues to Moderate Variable Limited evidence Adequate of Ancient expand, but more slowly than prior to 2000. or limited evidence Drainage Variable trends in groundwater levels. consensus and high level of consensus 8 Northern Zone Extent of salinity moderate and likely to Moderate Variable Adequate Limited evidence of Rejuvenated expand but at slower rates than prior to evidence or limited Drainage 2000. Variable trends in groundwater and high level of consensus levels. consensus
Table 2.7.1 Resource status and trends summary for dryland salinity number Hydrozone Summary Risk Groundwater Trends Confidence in condition Confidence in trend 1 Kalbarri Sandplain Extent of salinity very minor. Salinity could develop in the medium term. Variable trends in groundwater levels. Moderate Variable Adequate evidence and high level of consensus Limited evidence or limited consensus 2 Northampton Block Extent of salinity minor and unlikely to expand. Mostly rising groundwater trends as levels recover from drought. Low Deteriorating Adequate evidence and high level of consensus Adequate evidence and high level of consensus 3 East Sandplain Extent of salinity minor but will almost certainly develop in the medium term because groundwater trends are mostly rising. High Deteriorating Adequate evidence and high level of consensus Adequate evidence and high level of consensus 4 Irwin Terrace Extent of salinity moderate, no imminent threat of expansion. Variable trends in groundwater levels. Moderate Variable Limited evidence or limited consensus Adequate evidence and high level of consensus 5 Arrowsmith Extent of salinity Salinity could develop in medium term. Variable trends in groundwater levels. Low Variable Limited evidence or limited consensus Adequate evidence and high level of consensus 6 Dandaragan Plateau Extent of salinity minor but actively spreading with mostly rising trends in groundwater levels. Large area of high quality agricultural land at risk. High Deteriorating Limited evidence or limited consensus Adequate evidence and high level of consensus 7 Northern Zone of Ancient Drainage Salinity is extensive and continues to expand, but more slowly than prior to 2000. Variable trends in groundwater levels. Moderate Variable Limited evidence or limited consensus Adequate evidence and high level of consensus 8 Northern Zone of Rejuvenated Drainage Extent of salinity moderate and likely to expand but at slower rates than prior to 2000. Variable trends in groundwater levels. Moderate Variable Adequate evidence and high level of consensus Limited evidence or limited consensus quality quality quality quality quality
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