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  2. HEC-RAS - Wikipedia

    en.wikipedia.org/wiki/HEC-RAS

    3D view. HEC-RAS is simulation software used in computational fluid dynamics – specifically, to model the hydraulics of water flow through natural rivers and other channels.. The program was developed by the United States Army Corps of Engineers in order to manage the rivers, harbors, and other public works under their jurisdiction; it has found wide acceptance by many others since its ...

  3. Water balance - Wikipedia

    en.wikipedia.org/wiki/Water_balance

    The water balance is also referred to as a water budget. Developing water budgets is a fundamental activity in the science of hydrology. According to the US Geological Survey: [4] An understanding of water budgets and underlying hydrologic processes provides a foundation for effective water-resource and environmental planning and management.

  4. List of statistical software - Wikipedia

    en.wikipedia.org/wiki/List_of_statistical_software

    nQuery Sample Size Software – Sample Size and Power Analysis Software [7] O-Matrix – programming language; OriginPro – statistics and graphing, programming access to NAG library; PASS Sample Size Software (PASS) – power and sample size software from NCSS

  5. Groundwater banking - Wikipedia

    en.wikipedia.org/wiki/Groundwater_banking

    The accounting system tracks the recharge and withdrawals of stored water and it can include a market system to reserve the storage of water. [2] Depositors could earn credits for the recharge of water which can be used later on for the water recovered from the bank. [2] The banking system could then be set up to allow trading of credits. [2]

  6. Data-flow diagram - Wikipedia

    en.wikipedia.org/wiki/Data-flow_diagram

    Data flow diagram with data storage, data flows, function and interface. A data-flow diagram is a way of representing a flow of data through a process or a system (usually an information system). The DFD also provides information about the outputs and inputs of each entity and the process itself.

  7. Hydrological model - Wikipedia

    en.wikipedia.org/wiki/Hydrological_model

    The linear-reservoir model (or Nash model) is widely used for rainfall-runoff analysis. The model uses a cascade of linear reservoirs along with a constant first-order storage coefficient, K, to predict the outflow from each reservoir (which is then used as the input to the next in the series).

  8. Water storage - Wikipedia

    en.wikipedia.org/wiki/Water_storage

    Water storage is a broad term referring to storage of both potable water for consumption, and non potable water for use in agriculture. In both developing countries and some developed countries found in tropical climates, there is a need to store potable drinking water during the dry season .

  9. Water pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Water_pollution_in_the...

    Topsoil runoff from farm, central Iowa (2011). Water pollution in the United States is a growing problem that became critical in the 19th century with the development of mechanized agriculture, mining, and industry, although laws and regulations introduced in the late 20th century have improved water quality in many water bodies. [1]