Bingai River
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| Bingai River Soengai Bindjai, Soengai Bingai, Lao Bingai, Sei Bingei | |
|---|---|
  Location of the mouth  Bingai River (Indonesia) | |
| Native name | Sungai Bingai (Indonesian) |
| Location | |
| Country | Indonesia |
| State | North Sumatra |
| Physical characteristics | |
| Mouth | Wampu River |
• coordinates | 3°42′26″N 98°23′23″E / 3.7072°N 98.3897°E |
Bingai river (Indonesian: Sungai Bingai) is a river in the province of North Sumatra of Sumatra island, Indonesia, flowing into Wampu River,[1] about 1400 km to the northwest of the capital Jakarta.[2] The river passes through the City of Binjai, with a length of 15 km and the drainage basin area of 150 km2 in North Binjai area.[3]
The river flows along the northeast area of Sumatra with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).[4] The annual average temperature in the area is 25 °C. The warmest month is March, when the average temperature is around 26 °C, and the coldest is January, at 23 °C.[5] The average annual rainfall is 3495 mm. The wettest month is October, with an average of 460 mm rainfall, and the driest is March, with 192 mm rainfall.[6]
Natural resources
The state water company, PDAM Tirtasari, works together with PT Sumut Tirta Resource Lien Cheng, and the mayor of Binjai City to form a purchase agreement of processed water with a build operate and transfer (BOT) scheme for 25 years, that PT Sumut Tirta Resource builds and operates the water treatment plant to process raw water from Bingai river, then the processed water is bought by PDAM Tirtasari in the amount of 25,488 cubic meter/day to supply household customers.[7]
Ecology
Periphyton Community Structure research in 2015 discovered 34 genus of organism in 3 families: Bacillariophyceae (23 genus), Chlorophyceae (8 genus), and Cyanophyceae (3 genus), at 3 stations. Periphyton Diversity (H´) ranged from 2.38 to 2.70. Abundance ranged from 10,136 to 30,216 ind/cm2. Acidity (pH) ranged from 7,35 − 7,45, dissolved oxygen (DO) ranged from 4.65 to 4.75 mg/L, brightness ranged from 42.5 to 60 cm, current ranged from 0.15 to 0.21 m/sec, nitrates ranged from 2.1 to 2.55 mg/L, phosphates ranged from 0.18 to 0.25 mg/L.[3]