2007-03-26 20:08:44 · 4 answers · asked by Anonymous in Environment
Assuming the river system hasn't been too badly interefered with by man, the impacts of a flood are generally quite positive:
* Deposits silt in the floodplain, improving/retoring soil fertility.
* Fills swamps and billabongs, and often connects them, allowing fish and amphibians the opportunity to breed.
* Flushes away any algal blooms that have developed in stagnant water.
* Trees and other debris carried downstream form habitat for fish and other aquatic creatures.
2007-03-26 20:23:04 · answer #1 · answered by Tim N 5 · 0⤊ 0⤋
Often they are good, bringing new silt for topsoil to farmland. Walling in the rivers with levees makes more of the land inhabitable, but with time the soil gets poorer. Great dilemma.
2007-03-26 20:20:06 · answer #2 · answered by ZORCH 6 · 0⤊ 0⤋
Well, coming from a country that has this issue several times & been into one, for sure it would at least be "diseases" caused by rats urine (leptospirosis?), skin rash, dehydration (no frash water). Improper cleaning of the muds/ affected furniture will also causes garbage problem.
2007-03-26 20:23:37 · answer #3 · answered by adiwsusanto 6 · 0⤊ 0⤋
tops soils are washed away .many plants and trees are broken ,killed or covered in mud
animals die (domestic and wild)
animal food is lost (domestic and wild)
fish are killed because of muddy waters
waters are contaminated ,because of death or sewage systems that become connected directly with the water
2007-03-27 08:01:16 · answer #4 · answered by Anonymous · 0⤊ 0⤋