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  2. Watershed delineation - Wikipedia

    en.wikipedia.org/wiki/Watershed_delineation

    The conventional method of finding a watershed boundary is to draw it by hand on a paper topographic map, or on a transparent overlay.The watershed area can then be estimated using a planimeter, by overlaying graph paper and counting grid cells, or the result can be digitized for use with mapping software.

  3. Chart recorder - Wikipedia

    en.wikipedia.org/wiki/Chart_recorder

    Chart recorders of a control panel at a water purification plant record water flow rates at different stages of the process. The paper chart is driven past the pen at a steady rate by a clockwork or electrical drive mechanism.

  4. Rating curve - Wikipedia

    en.wikipedia.org/wiki/Rating_curve

    In hydrology, a rating curve is a graph of discharge versus stage for a given point on a stream, usually at gauging stations, where the stream discharge is measured across the stream channel with a flow meter. [1] Numerous measurements of stream discharge are made over a range of stream stages.

  5. Hydrograph - Wikipedia

    en.wikipedia.org/wiki/Hydrograph

    A Lag-1 hydrograph is a graph of discharge which can be accomplished without a time axis (Koehler 2022). This technique allows data properties such as Q, dQ/dt, and d 2 Q/dt 2, and trends of increasing, decreasing or no change flow to be readily seen and understood on a single graph. Flow pulse reference lines can easily be added and interpreted.

  6. Routing (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Routing_(hydrology)

    If the water flow at a particular point, A, in a stream is measured over time with a flow gauge, this information can be used to create a hydrograph. A short period of intense rain, normally called a flood event, can cause a bulge in the graph, as the increased water travels down the river, reaches the flow gauge at A, and passes along it. If ...

  7. California is finally digitizing its 100-year-old paper water ...

    www.aol.com/california-digitizing-100-old-paper...

    Water board staff warn that the journey to a data-based water future for California is long. That’s not just because properly scanning 2 million pages will take time, but combining that data ...

  8. Flow visualization - Wikipedia

    en.wikipedia.org/wiki/Flow_visualization

    Flow visualization is the art of making flow patterns visible. Most fluids (air, water, etc.) are transparent, thus their flow patterns are invisible to the naked eye without methods to make them this visible. Historically, such methods included experimental methods.

  9. Just How Worried About Social Security Should You Be Right Now?

    www.aol.com/just-worried-social-security-now...

    Furthermore, 43% of retirees believe their benefits will be cut in the future, while 47% of nonretired adults worry that Social Security won't be able to pay them a benefit at all once they retire.

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