Development of Blue-green infrastructure framework to restore nallahs (dirty drains) to nadis (streams), in India

Abstract

The rivers and streams serve as important life support systems for helping in recharging the aquifers and regulating the hydrological cycle besides providing habitats and breading grounds for birds, fish and aquatic life. However, these are always becoming targets of adverse effects of development around the streams particularly in urban areas due to presence of human activities like urbanization and climate change. As a result of these activities, most of the urban streams have got degraded due to encroachment, siltation discharge of domestic sewage, surface drainage caring sand and silt and other chemical pollutants. Literature review is conducted to study how resilience and ecosystem services can play important role in climate change adaptation and to keep balance between nature and society. This review paper is to analyse the Green Infrastructure (GI) and the recent Blue-Green Infrastructure (BGI) are the multidisciplinary approaches to combat the negative impact of urbanization and climate change on urban streams and revive the condition totally. Identification of the need of development of Blue-Green infrastructure framework to transform nallahs (dirty drains) to nadis(Streams) in India.