Attanagalu_Oya

Attanagalu Oya

Attanagalu Oya

River in Sri Lanka

The Attanagalu Oya (Sinhala: අත්තනගලු ඹය) is a river in Gampaha District, Sri Lanka.[1][2]

Quick Facts Native name, Location ...

The length of the river is approximately 76 km, with a drainage basin of 727 km2.[1][3][4] It originates in Galapitamada area in Kegalle district and drains into the Negombo Lagoon as the Dandugam Oya.[5][6] The river often causes flooding in low-lying areas in the Gampaha district.

Hydrology

The river originates from lower peneplains of Kegalle District in Galapitamada area. It is joined by the left tributaries Basnagoda Oya and Waharaka Oya in Karasnagala and later joined by Algama Oya further down stream close to Attanagalla town.

Uruwal Oya and Diyaeli Oya joins the Attanagalu Oya in Gampaha. The river then flows in a northerly direction and joined by Kimbulapitiya oya and Mapalan Oya in Madawala (near Katunayake) and forms Dandugam Oya, Attanagalu Oya-Dandugam Oya river system then finally discharges into Negombo Lagoon in Dandugama Area where Muthurajawela meets Negombo Lagoon. Close to its mouth it is also joined by Ja-Ela which is a diversion of the Uruwal Oya.

Tributaries

  • Left
    • Basnagoda Oya
    • Waharaka Oya
    • Uruwal Oya
    • Ja Ela
  • Right
    • Algama Oya
    • Diyaeli Oya
    • Kimbulapitiya Oya/ Dunagaha Ela
    • Mapalan Oya [5][4]

References

  1. [1]
    Pathirana, C. D. K.; Bandara, N. J. G. J.; Jayaweera, C. D. (2012-12-20). "Investigation of the pollution extent of Attanagalu Oya". Proceedings of International Forestry and Environment Symposium. 17. doi:10.31357/fesympo.v17i0.1054 (inactive 31 January 2024). ISSN 2235-9427.{{cite journal}}: CS1 maint: DOI inactive as of January 2024 (link)
  2. [2]
    "preliminary_study_on_pethia_reval_meegaskumbura_Pethiyagoda_2008_and_other_related_ichthyofauna_of_Attanagalu_oya_river_basin_Sri_Lanka".
  3. [3]
    "International Forestry and Environment Symposium".
  4. [4]
    Wijesekera, Sohan; Perera, L (2016-05-02). "Key Issues of Data and Data Checking for Hydrological Analyses - Case Study of Rainfall Data in the Attanagalu Oya Basin of Sri Lanka". Engineer: Journal of the Institution of Engineers, Sri Lanka. 45 (2): 1. doi:10.4038/engineer.v45i2.6936.
  5. [5]
    "Preliminary Groundwater Assessment and Water Quality Study in the Shallow Aquifer System in the Attanagalu Oya Basin" (PDF). Archived from the original (PDF) on 2017-08-09. Retrieved 2018-06-12.
  6. [6]
    "Template for Submission of Scientific Information to Describe Areas Meeting Scientific Criteria for Ecologically or Biologically Significant Marine Areas" (PDF).
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