Which of the followings is not true?
a. water levels in aquifers can change due to groundwater extraction.
b. around clusters of pumping wells, cone of depression can be miles in extent.
c.. drawdown is the decline in water level at a well relative to initial water level
d. groundwater divide is funnel-shape zone of water-level decline around a well that occurs due to pumping.

d) Groundwater divide is funnel-shape zone of water-level decline around a well that occurs due to pumping.

Explanation: Groundwater divide is known as the the boundary that gets formed in between the two water basins that is found at some point (usually high).It specifies the water boundary of different groundwater bodies.

The factor that divides the water in streams in a shape of a funnel is known as watershed.It comes into action when there is rainy condition and the water falls on the uneven surface of land and mountains and thus gets splited in to streams of groundwater .So, option(d) is not true statement.

i would expect light rain in pittsburgh throughout the following 24 to 48 hours. the lower/falling weights in urban areas toward the west demonstrate that a low weight framework is moving from west to east toward pittsburgh. low weight frameworks are ordinarily connected with precipitation. the way that you don't see a major drop in temperature in the more western urban areas demonstrates the low weight framework is moving with a warm front, so just light rain would be normal. substantial downpours or progressively vicious climate is just typically connected with chilly fronts, where the warm air is pushed up and over a cool front quickly. this quickly rising air (convection) is what gives you heavier torrential downpours, and other conceivably serious weather conditions.