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The causes and impact of urban floods in Uttarakhand: a review of spatial planning and potential of nature based solutions

Student name: Ms Anubhuti Shekhar
Guide: Dr Ranjana Ray Chaudhuri
Year of completion: 2022
Host Organisation: TERI School of Advanced Studies
Supervisor (Host Organisation): Dr Fawzia Tarannum
Abstract:

Uttarakhand separated from Uttar Pradesh and formed a separate state in 2000. Since then, there has been rampant development in the state, with its economic development growth being the 2nd fastest in India. Therefore, in this study, I will analyze the urban flood situation in the Dehradun district and review the spatial planning and potential of NbS in Mitigating floods in the Dehradun district. In the district, urban flooding is a severe problem, particularly in densely populated areas and places adjacent to river flood plains. Water piling on streets and seasonal river flooding are severe problems in Dehradun.

In the study, I will be analysing various indices on the district which holds the capital of the state to see how the separation of a state can cause increases or decreases in vegetation, built up, soil, bare land, etc., to see some trends along the way. According to a CEEW analysis, over 85 percent of Uttarakhand's districts, which have a population of over 9 million, are hotspots for catastrophic floods and related phenomena such as landslides and erosion. Uttarakhand has lost more than 50,000 hectares of forest cover in the previous 20 years, resulting in regional microclimatic changes. Lack of preparedness and lack of nature-based solutions in low-lying areas in the district has resulted in increasing life losses every year. This research aims to evaluate the reasons that lead to floods in the district and mentions the strategies to reduce flood risk by adopting efficient allocation of resources and local community members.

Key words: Urban Floods, Nature Based Solution, GIS, Dehradun.