| Lawa River | |
| Map Size: | 285 |
| Pushpin Map: | Indonesia Kalimantan#Indonesia |
| Pushpin Map Size: | 285 |
| Pushpin Map Caption: | Location of river mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | Indonesia |
| Subdivision Type2: | Province |
| Subdivision Name2: | East Kalimantan |
| Subdivision Type3: | Regency |
| Mouth: | Mahakam River |
The Lawa River is a river in East Kalimantan province, Borneo island, Indonesia, about 150km (90miles) northwest of Balikpapan.[1] It is a branch of the Mahakam River in eastern Borneo, which is situated entirely within the Kutai Barat and flows into the Mahakam approximately 200km (100miles) upstream from Samarinda. The indigenous communities of Lotaq and Mejaun (The Dayaks) are situated near its source.[2]
The river flows in the eastern area of Borneo with a predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).[3] The annual average temperature in the area is 23C. The warmest month is October, when the average temperature is around 24C, and the coldest is February, at 22C.[4] The average annual rainfall is 2939mm. The wettest month is November, with an average of 354mm of rainfall, and the driest is August, with a 124mm of rainfall.[5]