CEST ID: cest2025_00162
Room N/A | Thu 4 Sep 2025 | 17:00 - 18:00 pm
In many developing countries, most rivers and streams remain unclassified and unassessed for water quality. Monitoring key parameters is crucial for identifying areas for conservation or restoration. However, limited resources and technical expertise pose challenges, particularly in the global south.
The Stream Visual Assessment Protocol (SVAP), developed by the US Department of Agriculture, is a qualitative, field-based method to evaluate stream health. It allows non-technical individuals to conduct rapid assessments based on observable features. In this study, seven groups of five people, including both technical and non-technical participants, applied SVAP to two local streams. They assigned visual scores to stream features such as Riparian Buffer, Bank Stability, Canopy Cover, Water Clarity, Stream Substrate, Channel Condition, and Hydrology across 10 monitoring stations. The total scores were compared to established water quality benchmarks.
Results showed that the first stream was rated "Fair," indicating moderate impairment with noticeable impacts on habitat and water quality. The second stream was classified as "Poor," reflecting severe degradation and significant impairment. To validate these findings, water samples were collected from all 10 stations and analyzed for BOD, COD, coliform levels, dissolved oxygen, ammonia, and phosphates. The chemical analysis supported the SVAP results, demonstrating its reliability as a preliminary assessment tool. SVAP provides an accessible method for evaluating stream health and engaging communities in water resource stewardship.
Presenter:
R SORIANO
Authors
R SORIANO
P De Yro