Before the introduction of European agricultural methods

[mstakh.i.mo.mi]

The main rivers in the North Bay include the Napa River, Petaluma River, Guarala River, Russia River, etc.; the first two flow into the San Pablo Bay, and the latter two flow into the Pacific Ocean. In the South Bay, the Guadalupe River flows into the vicinity of Alveso in San Francisco Bay. [There are also several lakes in the 137] Bay Area, including Lake Berissa and others making lakes [138] and Lake Merritt.


[139] the coast of San Francisco Bay was mainly composed of tidal swamps. [140] Today, the student database Gulf has undergone major changes and redesigns to meet the needs of water supply, shipping, agriculture, and urban development. Its side effects include the loss of wetlands and the introduction of pollutants and invasive species. [141] About 85% of the swamps have disappeared or been destroyed, but about 50 swamps and swamp fragments still exist.


[140] Large swamps were initially destroyed by farmers for agricultural purposes, and then reused as salt evaporation ponds to produce salt for food and other purposes. [142] Today, regulations limit the damage to tidal swamps, and most tidal swamps are currently returning to their natural state. [140] Over time, the frequency of droughts and wildfires continues to increase and becomes no longer seasonal, but occurs throughout the year, further putting pressure on water safety in the area.