Resources Of Water Ppt
WATER RESOURCES
Water and its uses
The average consumption of water in India per person each day is minimum 135L.
This water is used for various purposes from bathing to drinking.
This water used should be clean and sterile.
Water holds more importance than most of resources .
Due to rising threats on ecosystem it has become necessary to find means of saving water. Resources of water –
The fresh water resources are…
Surface wate
Under river flow
Ground water
Desalination
Frozen water
Surface waterSurface water is water in a river, lake or fresh water wetland. Surface water
is naturally replenished by precipitation and naturally lost through discharge to the oceans, evaporation, evapotranspiration and sub-surface seepage. Although the only natural input to any surface water system is precipitation within its watershed, the total quantity of water in that system at any given time is also dependent on many other factors. These factors include storage capacity in lakes, wetlands and artificial reservoirs, the permeability of the soil beneath these storage bodies, the runof characteristics of the land in the watershed, the timing of the precipitation and local evaporation rates. All of these factors also afect the proportions of water loss.
Human activities can have a large and sometimes devastating impact on these factors. Humans often increase storage capacity by constructing reservoirs and decrease it by draining wetlands. Humans often increase runof quantities and velocities by paving areas and channelizing stream flow. Under river flow
Throughout the course of a river, the total volume of water
transported downstream will often be a combination of the visible free water flow together with a substantial contribution flowing through sub-surface rocks and gravels that underlie the river and its floodplain called the hyporheic zone. For many rivers in large valleys, this unseen component of flow may greatly exceed the visible flow.
Water and its uses
The average consumption of water in India per person each day is minimum 135L.
This water is used for various purposes from bathing to drinking.
This water used should be clean and sterile.
Water holds more importance than most of resources .
Due to rising threats on ecosystem it has become necessary to find means of saving water. Resources of water –
The fresh water resources are…
Surface wate
Under river flow
Ground water
Desalination
Frozen water
Surface waterSurface water is water in a river, lake or fresh water wetland. Surface water
is naturally replenished by precipitation and naturally lost through discharge to the oceans, evaporation, evapotranspiration and sub-surface seepage. Although the only natural input to any surface water system is precipitation within its watershed, the total quantity of water in that system at any given time is also dependent on many other factors. These factors include storage capacity in lakes, wetlands and artificial reservoirs, the permeability of the soil beneath these storage bodies, the runof characteristics of the land in the watershed, the timing of the precipitation and local evaporation rates. All of these factors also afect the proportions of water loss.
Human activities can have a large and sometimes devastating impact on these factors. Humans often increase storage capacity by constructing reservoirs and decrease it by draining wetlands. Humans often increase runof quantities and velocities by paving areas and channelizing stream flow. Under river flow
Throughout the course of a river, the total volume of water
transported downstream will often be a combination of the visible free water flow together with a substantial contribution flowing through sub-surface rocks and gravels that underlie the river and its floodplain called the hyporheic zone. For many rivers in large valleys, this unseen component of flow may greatly exceed the visible flow.