Earth Science Stack Exchange
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Questions tagged [hydrology]

Hydrology is the study of the properties and behaviour of water. It concerns both surface as well as subsurface water, although water in the oceans and atmosphere is generally excluded. Those are studied by oceanography and meteorology, respectively.

Hydrology is the study of the properties and behaviour of water. It concerns both surface as well as subsurface water, although water in the oceans and atmosphere is generally excluded. Those are studied by and , respectively.

Typical subjects of hydrological studies are the hydrological cycle and water balance, the chemistry of the water, and flow patterns in surfacewater or groundwater.

The applications of hydrology are diverse, ranging from management of water resources, to prediction and prevention of floodings, droughts or landslides. Also the designs of sewer networks, bridges, canals, and hydro-electrical dams are heavily influenced by hydrological knownledge. Furthermore, hydrological concepts are sometimes also used outside the direct field of Earth Science, for example in modelling of urine flows in diapers.

246 questions
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Recharge a dry aquifer?

Aquifers have a natural recharge rate. However, some aquifers rely on fossil water for their primary (or even sole) water supply. When water in a well is pulled from these aquifers faster than they can replenish, the level drops and they…
Richard
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Permeability of well screen as a limitation to a slug-in test

If you were to do a slug-in test where you put in a known volume of water, would there be a point where, say if the formation was extremely permeable, the permeability of the screen itself would be measured?
user541
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Interpreting some hydropower data. What does DSF mean in this context?

This is the historical feed of the Keystone dam for October 2014: www.swt-wc.usace.army.mil/chartbin/KEYSOct14.shtml Here is the real time feed: www.swt-wc.usace.army.mil/ops_hydropower/KEYShydro.html I am having trouble understanding the…
jenny
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Underwater rock conduit

After looking at this question - Source of water for the Great Artesian Basin in Australia one would like to know whether there are any underwater rock conduits that transport fresh water across seas in the world. I have not come across any in my…
user1066
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The relationship between specific discharge and flux

How are specific discharge and flux linked? Is flux simply specific discharge × area? And when we speak of flux of an element eg. N-flux, is that specific discharge × concentration × area?
Bprodz
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Is the Great Artesian Basin a closed basin?

Areas where topography prevents the outflow of water are called closed basins. Is the GAB a closed basin? What if external bodies of water flowed in? Is that still "closed"?
StonerYancy
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Slope of Saturation vapor pressure versus temperature-A parameter in Penman's equation

How is mm of Hg per degree Celsius converted to kPa per degree Celsius? I also need the equation for computing the value of A (slope) in mm of Hg per degree Celsius.
user903
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Why isn't the Amazon River in the top for the highest hydropower potential

Because of its high flow rate, why isn't the Amazon River one of the top rivers with the highest potential for hydro electric power potential in the world?
Tatar
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Water Freezing Quandary

Good Day All, I have quandary that I am unable to find an answer for. I live in Ontario, Canada. Then home I reside on is directly on a lakefront. It makes for beautiful views and wonderful times in the summer with the kids. In the winter time…
user21588
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Loop in the continental divide

Various maps of the Continental Divide (the hydrological feature, not the trail) contain a loop that looks like this: What is the hydrologic meaning of the loop in Wyoming? Even if it's a basin, it must have at least a theoretical outlet from…
Llaves
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Time series analysis and streamflow data

Does anyone know of any examples of (common) time series analysis techniques applied to streamflow data? Edit: I am wondering if anyone has come across papers using common time series analysis techniques to identify the peaks in real time…
traggatmot
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Any way to increase the amount of water that flows through bedrock?

My pond is fed by a spring that collects inside a large concrete box (6' x 6' x 8'deep) that was formed up many years ago. The walls of this box are sitting on bedrock. Small trickles of water seep through the bedrock when I clean the sand buildup…
charles mackie
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MIKE Hydro Extended Validation Error: Q/h relation H-Neg must be increasing

I am setting up a MIKE Hydro model for a basin. I am getting extended validation errors on MIKE Hydro Weirs(267) extended validation: StructureName: Q/h relation H-Neg must be increasing I tried calculating the Q/h relations for the weir again…
moinabyssinia
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In winter, is pond water warmer with or without a fountain? I have goldfish

I know that goldfish can hibernate but I'd like to keep the water warmer for them. Is moving water colder or warmer than still water? The water shoots out of "pipes" about 3" above the water's surface. Thank you for your comments, I have…
user14617
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Freeze variations

We fish on several lakes on one property. Some lakes are frozen to 3 inches and others are ice free. If it has been below freezing for weeks, why haven't all lakes froze ?
fritz fedke
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