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An ecosystem can be directly or indirectly dependent, [7] as well as have a variation in groundwater use throughout the seasons. [1] There are a variety of methods for classifying types of groundwater-dependent ecosystems either by their geomorphological setting and/or by their respective groundwater flow mechanism (deep or shallow). [6]
California is the only state with a groundwater law that includes provisions intended to protect groundwater-dependent ecosystems. But the law, adopted in 2014, gives considerable leeway to local ...
Scientists have found that only 1% of the state’s groundwater-dependent ecosystems are sufficiently protected under measures adopted to date. McEnhill said that’s the case in Sonoma County ...
The San Joaquin Valley recently received some good news about its groundwater: We are replenishing more of it whenever we have the chance. Comparing two recent wet years — 2017 to 2023 — the ...
[5] [6] This provides force for groundwater recharge and discharge to other waters as well. The extent of groundwater recharge by a wetland is dependent upon soil, vegetation, site, perimeter to volume ratio, and water table gradient. [7] [8] Groundwater recharge occurs through mineral soils found primarily around the edges of wetlands. [9]
The hyporheic zone is the region of sediment and porous space beneath and alongside a stream bed, where there is mixing of shallow groundwater and surface water.The flow dynamics and behavior in this zone (termed hyporheic flow or underflow) is recognized to be important for surface water/groundwater interactions, as well as fish spawning, among other processes. [1]
When groundwater is extracted from an aquifer, a cone of depression is created around the well.As the drafting of water continues, the cone increases in radius. Extracting too much water (overdrafting) can lead to negative impacts such as a drop of the water table, land subsidence, and loss of surface water reaching the streams.
The groundwater basin of a given aquifer may be managed by a water district; for example the Coachella Valley Water District manages the underground water in California's Coachella Valley groundwater basin (CA groundwater basin no. 7–021), which lies within the Colorado River hydrologic region, one of the 13 top-level California state ...