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Definition/Study guide

Upstream Where the water comes from(uphill) Indonesian:ke hulu/keatas
Downstream Where the water goes to(downhill) Indonesian:ke hilir/kebawah
River source Farthest point upstream Indonesian:hulu sungai
River mouth Farthest point downstream Indonesian:mulut sungai
Tributary Contributes water to a larger body of water Indonesian:anak sungai
Flood plain Flat area likely to flood Indonesian:dataran banjir
litter/trash Chokes wildlife
Fertilizer Fish die from eutrophication
Pesticides Poison animals high on the food chain
Fresh water Has no salt in it
Salt water In the ocean
Brackish water In estuaries/mixed salt-fresh water