Identification of hydrologically sensitive areas in Valanchery watershed / (Record no. 19476)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 01925nam a2200169 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 631.587 |
| Item number | ARJ/ID |
| 088 ## - REPORT NUMBER | |
| Report number | P 666 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Arjun K |
| 245 ## - TITLE STATEMENT | |
| Title | Identification of hydrologically sensitive areas in Valanchery watershed / |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication | Tavanur : |
| Name of publisher | Department of soil and water conservation engineering, |
| Year of publication | 2025. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Soil erosion poses a significant threat to agricultural productivity and environmental sustainability, particularly in vulnerable watersheds. This study aims to identify Hydrologically Sensitive Areas (HSAs) within the Valanchery watershed in Kerala, India, to propose targeted soil and water conservation interventions. A total of 19 soil samples were collected across various land use types and analyzed for key physical properties, including bulk density, specific gravity, organic matter content, soil texture, and hydraulic conductivity. Spatial distribution maps of the soil properties were generated using Inverse Distance Weighting (IDW) in ArcGIS. The study employed digital elevation models (DEMs) to calculate the Topographic Wetness Index (TWI) and Soil Topographic Index (STI), critical for delineating HSAs. Results revealed that areas with STI values above 9 were prone to high runoff and erosion, typically concentrated along drainage lines and valley bottoms. Overlay analysis of Land Use/Land Cover (LULC) and STI maps indicated that paddy fields, barren lands, and mixed vegetation in these zones are most vulnerable. Accordingly, conservation measures such as contour bunds, percolation pits, agroforestry, and check dams are recommended based on IMSD guidelines. This study provides a replicable geospatial framework for erosion risk assessment and soil conservation planning in similar agroecological settings. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ashalakshmi M S |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Swathy Suresh |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Anu Varghese (Guide) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Project Report |
| Collection code | Home library | Current library | Full call number | Accession Number | Koha item type |
|---|---|---|---|---|---|
| Reference | KAUAET | KAUAET | 631.587 ARJ/ID | P 666 | Project Report |