The main source of fresh water is precipitation, which includes rain, snow, sleet, and hail.

Precipitation collects in rivers, lakes, and groundwater aquifers, which are vital sources for human consumption and agriculture.

• Surface Water:

  Rivers and lakes are replenished by precipitation and runoff.

• Groundwater:

  Rainwater infiltrates the soil and rock to replenish underground aquifers.

• Ice Caps and Glaciers:

  Although frozen, these store significant amounts of fresh water, which melt and contribute to rivers and streams.

For more detailed information, you can refer to resources like:

• USGS - Fresh Water