Spatial Delimitation of Small Headwater Catchments and Their Classification in Terms of Runoff Risks

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00354835" target="_blank" >RIV/68407700:21110/21:00354835 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/w13233458" target="_blank" >https://doi.org/10.3390/w13233458</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/w13233458" target="_blank" >10.3390/w13233458</a>

Result language

angličtina

Original language name

Spatial Delimitation of Small Headwater Catchments and Their Classification in Terms of Runoff Risks

Original language description

The hydrological similarity of catchments forms a basis for generalizing their hydrological response. This similarity of the hydrological response enables catchments to be classified from numerous perspectives, e.g., hydrological extremes or ecological aspects of catchments. A specific group is formed by so-called “first-order catchments”. This article describes the derivation process of small headwater catchments up to 5 km2 in size on the territory of the Czech Republic. The delimitation is based on the digital terrain model, the stream network, and the water reservoirs. The catchments derived in this way cover 80% of the country. Five mutually independent and sufficiently representative parameters were selected with Principal Components Analysis (PCA), and were used for the cluster analysis performed on two to eight clusters. Clustering Validity Indices (CVI) was used to determine the optimal number of clusters. Subsequently, each generated cluster was assessed for the potential risk of the occurrence of direct runoff, in five classes, on a scale from a moderate degree of risk to a high degree of risk. Six clusters were generated, which is the optimal number in terms of the CVI and their hydrological properties. In this case, 17% of the Czech Republic territory is assessed as lying within a high-risk area, 39% as lying within a medium-risk area, and 24% as lying within a below-average risk area in terms of the occurrence of direct runoff.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10501 - Hydrology

Project

<a href="/en/project/QK1910029" target="_blank" >QK1910029: Antecedent saturation and design rainfalls as factors of hydrological response in small catchments</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Water

ISSN

2073-4441

e-ISSN

2073-4441

Volume of the periodical

2021

Issue of the periodical within the volume

13(23)

Country of publishing house

CH - SWITZERLAND

Number of pages

21

Pages from-to

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UT code for WoS article

000734691600001

EID of the result in the Scopus database

2-s2.0-85120779302