Ecological Reserve Determination and Compliance Monitoring: Crocodile River Catchment

Reserve determination and compliance assessment for the Crocodile (West) River using IHA-based flow analysis. Documents recommended ecological flows based on the Building Block Methodology, assessments of the present-day flow regime using Indicators of Hydrological Alteration, and compliance monitoring against Resource Quality Objectives (RQOs). The Crocodile River is a key tributary of the Incomati system, regulated by Kwena Dam and subject to significant irrigation abstractions. The study demonstrates how IHA parameters are used to assess whether environmental flow allocations are being met — comparing actual flow statistics with prescribed ecological flow requirements. Produced by DWS/IUCMA as part of the River EcoStatus Monitoring Programme.