Английская Википедия:Agniyar River

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Шаблон:Short description Шаблон:Use dmy dates Шаблон:Use Indian English Шаблон:Infobox river

The Agniyar River is a non-perennial river in the Indian state of Tamil Nadu that flows southeast into the Bay of Bengal.

Course

The river begins as a small stream south of Keeranur, proceeding south and east, passing Karambakkudi. Southeast of Karambakkudi, the Grand Anicut canal connects to it. The river continues eastward past Sendakkottai, until it is joined by the Maharajasamundram River south of Pattukkottai and west of Adirampattinam. After this confluence, the river flows south for a short distance, until it empties into the Palk Strait south of the village of Rajamadam, in the Pattukkottai taluk of Thanjavur district.[1][2]

Watershed

The Agniyar River is located with the greater Agniyar basin, which includes the Agniyar's drainage basin, along with the watersheds of the neighboring Ambuliyar and Vellar rivers. This basin is situated to the north of the Pambar basin, and to the south and east of the Kaveri basin. The greater Agniyar basin covers 4809 km2 of land in the Pudukkottai, Thanjavur, Tiruchirappalli, Sivaganga, and Dindigul districts, while the smaller Agniyar basin covers 2058 km2. 1.9 million people live in the greater basin, while about 823,000 people make up the population of the smaller basin.[1]

Flow

As reported by a gauging station at the final dam across the river, the average yearly flow into the Bay of Bengal was about 90 million cubic metres of water. However, this average does not account for seasonal changes in precipitation and intermittent flow that result from India's wet and dry seasons.[3]

Irrigation

The river is utilized for extensive irrigation projects, with eight anicuts damming the river and diverting its flow to 1,280 storage tanks and 24,073 hectares of surrounding farmland. Additionally, a pumping station draws water from the river for municipal supply.[1]

Environmental issues

The river suffers from high nitrate and fluoride concentrations that are the result of agricultural runoff. Poor solid waste management and soil erosion also harm the river.[4] In the dry season, sand is sometimes illegally mined from the riverbed for use in construction. This extraction destabilizes the river's ecosystem and contributes to negative effects.[5]

References

Шаблон:Reflist


Шаблон:TamilNadu-stub