Hydrology & Climate Change

What is Hydrology? What is Climate Change? Are they related? This webpage provides a very basic knowledge of what is hydrology, climate change and how these two topics are related, in the context of California. Two small videos (8 minutes each) on each topic are available here in English and Spanish. The objective of these videos is to make available the fundamental knowledge regarding Hydrology and Climate Change.

I can present these materials in person; I have already done it with audiences varying from 20 up to 140 people! Please contact me (samsandoval@ucdavis.edu) to arrange a presentation, these presentations can be ideal for training sessions to farmworkers. Other audiences can be: teachers, personnel of water agencies, citizens, decision makers, people in the water supply industry, among others.

Climate Change 101

Climate Change 101 – First Part: Basic Concepts. (Presentation, Video Coming Soon)

This video explains what is weather and climate. It also explains what is the atmosphere and its composition, what the atmosphere does for us, the greenhouse gas effect and greenhouse gases, the role of greenhouse gases in the climate process.

Climate Change 101 – Second Part: Effect of Climate Change. (Presentation, Video Coming Soon)

This video explains the effect of more emissions of greenhouse gases into the atmosphere, and some examples of climate trends in California.

Hydrology 101

Hydrology 101 – First Part: Basic Concepts.

This video explains what is hydrology, the basics of surface water and groundwater hydrology. It starts from the water cycle until some of the basic laws of hydrology.

Hydrology 101 – Second Part: Impact of Climate Change in California Water Resources.

This video explains the current and expected effects of climate change on California water resources.

Water Cycle in California

This engaging series of videos presents the water cycle in California, exploring the geography, hydrology, and climate, starting with precipitation and ending as water into the sea. 


Video #1 - California's Climate

As a mediterranean climate, California faces wet winters and dry summers. This video outlines the main hydrologic processes within the state, discussing the rain shadow effect and atmospheric rivers, while distinguishing the difference between climate and weather.

*climate, weather, mediterranean climate, atmospheric rivers, snow line, rain shadow effect 


Video #2 - Drought in California

Recently, California was in a state of severe drought. This video explores the process of identifying a drought in addition to outlining a few of the main components to our water system. As a larger picture discussion, Professor Sandoval Solis describes the effects of climate change on California's hydrology. 

*drought, replenishment, aquifers, reservoirs, snowmelt, climate change 

Video #3 - California: The Bathtub

Due to the incredible mountain ranges and valleys within California, one can compare our state to a bathtub. This video clarifies the varying hydrologic classifications throughout California and how these play a key role in the water cycle. 

*rainfall runoff system, evapotranspiration (ET), aquifer storage, rainfall runoff aquifer system, outlets

Video #4 - Fall

Each season plays an important role in moving water throughout the state, replenishing our environment, and serving the demands of urban and agricultural users. During fall, the river recharges the aquifers, or underground storage of ground water. 

*losing river 

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Video #8 - Darcy's Law

It can become easy to forget the complex network of science happening under our feet at any given time. Darcy's Law allows us to understand the speed water travels as a combination of soil texture, porosity, and slope. 

* hydraulic gradient, hydraulic conductivity, Darcy's Law 

Video #9 - Sustainable Groundwater Management Act {SGMA}

Due to its importance for meeting agricultural and urban needs, groundwater is a valuable natural resource and therefore is carefully monitored. SGMA serves as a locally controlled tool in managing California's groundwater. Watch below to find out the purpose, principles, and participation SGMA allows. 

*SGMA, drought, groundwater overdraft, saltwater intrusion, land subsidence, GSA, GSP