Spatial and temporal variability of sediment and dissolved loads from two alpine watersheds of the Lesser Himalayas

Auteur(s) et Affiliation(s)

SINGH, O.

Div. of Environmental Sciences, IARI, New Delhi, Inde

SHARMA, M.C.

Centre for the Study of Regional Development, Jawaharlal Nehru Univ., New Dehli, Inde

SARANGI, A.

Water Tecnology Centre, IARI, New Dehli, Inde

SINGH, P.

Hydro Tasmania Consulting, New Dehli, Inde

Description :
In this study, an assessment of physical and chemical load, sediment yield and erosion rate has been undertaken at 8 different locations in the Sainj and Tirthan watersheds. The analysis revealed that the maximum load was transferred during the monsoon season. Moreover, the estimated average chemical erosion rate of the Sainj and Tirthan watersheds were higher than that of the Indian average representing all the rivers. Both watersheds were eroding physically and chemically at a faster rate than that of the world global average erosion rate. The flattish nature of the channels in some segments of these watersheds showed a lower transport of sediments, where as the constricted segments having steep bed slopes increased the velocity of flow and the sediment transport rate. These findings have important implications for water resource management.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2008, vol. 76, n°. 1, p. 27-35, nombre de pages : 9, Références bibliographiques : 44 ref.

Date :
2008

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais