| Tittel: | Overvann som naturfare – faktagrunnlag og rettslig håndtering | | Ansvar: | Steinar Taubøll, Kim H. Paus | | Forfatter: | Taubøll, Steinar  / Paus, Kim H. | | Materialtype: | Bokkapittel | | Utgitt: | Oslo : Cappelen Damm Akademisk, 2022 | | Omfang: | S. 95-117 | | ISBN/ISSN: | 9788202738686 | | Emneord: | Jus / Samfunn / Vannforsyning | | Stikkord: | Plan- og bygningsloven (2008) § 28-1 | | Note: | Verket utgis Open Access under betingelsene i Creative Commons-lisensen CC-BY 4.0
(http://creativecommons.org/licenses/by/4.0/). | | Innhold: | Abstract:
Through spatial planning and building regulation, municipalities are responsible for avoiding development that increases the risk of damage to buildings and infrastructure. This paper focuses on the dangers caused by surface runoff during heavy rainfall, which will happen more often as a result of climate change. Based on the Planning and Building Act § 28-1, the paper seeks to clarify the legislation concerning natural hazards regarding such situations. Efficient legal regulation of runoff hazards also presupposes a manageable factual basis for legal decisions. The paper therefore discusses, from a technical viewpoint, methods used to map the phenomena the rules are to be applied to, including terrain-based analyzes and variants of so-called rainfall-runoff models. In anticipation of improved methods, and based on available data, the models’ handling of uncertainty and necessary resource use, terrain-based analyzes are considered a suitable method. If the method is to be used to identify a potential runoff hazard, it is appropriate to strive for a standardization of, among other things, the threshold value for presenting a flow accumulation line and the spatial risk at this and flood area, as well as the upper validity area and possible limit against potential flood risk in waterbodies.
Keywords: natural hazards, flooding, rainfall-runoff models, municipal responsibility, spatial planning, building regulations | | Del av verk: | Vann, juss og samfunn |
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