Viewing Erosion and Sediment Results

The primary results from erosion and sediment components are time-series. Available results depend on the type of element, but always include both the total sediment load and the total sediment volume leaving the element. The total sediment load and volume are also separated out by grain size class or subclass. These results are accessed in the Watershed Explorer on the Results tab. When erosion and sediment components are activated, a special folder for erosion and sediment results is added under each element icon.

All of the erosion and sediment time-series data computed by an individual element are available for viewing. Click on a time-series node to preview the data in the Component Editor. You may select multiple time-series data by holding the shift or control key while using the mouse to click on additional nodes. The selected time-series may come from different elements in the same simulation, or the same element in different simulations. Results can also be combined from different types of simulations including Simulation Runs, Optimization Trials, Depth-Area Analyses, and Forecast Alternatives. The selected time-series data will automatically be partitioned into groups by data type if the erosion and sediment results are combined with other types of results such as flow or stage.

Subbasin

The Erosion Results for each subbasin include the time-series of total sediment load and total sediment volume leaving the subbasin. The total sediment time-series are the sum of all grain size classes. Also included are individual time-series of sediment load in each grain size class and sediment volume in each grain size class. The total sediment concentration in the outflow is also included among the results. The bulk flow result is an estimate of the combined water and sediment flow rates. The organization of the results is shown in the following figure.

Reach

The Sediment Results for each reach include the time-series of total sediment load and total sediment volume entering the reach, and the total sediment load and total sediment volume leaving the reach. The total sediment time-series area the sum of all grain size classes. Also included are the time-series of sediment load and sediment volume broken down into each grain size class both coming into the reach and leaving the reach. Furthermore, time-series results for reaches are available for active and inactive bed sediemnt as well as total bed sediment and suspended sediment. The bulk flow result is an estimate of the combined water and sediment flow rates. The organization of the results is shown in the following figure.

Reservoir

The Sediment Results for each reservoir include the time-series of total sediment load entering the reservoir, and the total sediment load leaving the reservoir. Additionally, the time-series of total sediment load settled to the bottom of the reservoir is available, along with the time-series of sediment load in suspension in the reservoir pool. For each of the all categories, the total sediment is the sum of all grain size classes. Also included is the time-series of sediment load in each grain size class for each of the all categories of sediment at a reservoir. The bulk flow result is an estimate of the combined water and sediment flow rates. The organization of the results is shown in the following figure.

Source

The Sediment Results for each source include the time-series of total sediment load and the time-series of total sediment volume leaving the source. These both represent the sum of all grain size classes. Results are also available broken down into each grain size class for sediment load and volume. The bulk flow result is an estimate of the combined water and sediment flow rates. The total sediment concentration in the outflow is also included among the results.

Junction

The Sediment Results for each junction include the time-series of total sediment load and the time-series of total sediment volume leaving the junction. These both represent the sum of all grain size classes. Results are also available broken down into each grain size class for sediment load and volume. The bulk flow result is an estimate of the combined water and sediment flow rates.

Diversion

The Sediment Results for each diversion include the time-series of total sediment load entering the diversion, and the total sediment load leaving the diversion. Similarly, the time-series of total sediment volume entering and leaving the diversion are also included. These both represent the sum of all grain size classes. Results are also available broken down into each grain size class for sediment load and volume. Additionally, the total sediment load in the diverted flow is available. The bulk flow result is an estimate of the combined water and sediment flow rates.

Sink

The Sediment Results for each sink include the time-series of total sediment load entering the sink and the time-series of total sediment volume entering the sink. The total sediment load (and volume) time-series is the sum of all sediment load (and volume) from each of the upstream elements. Also included is the time-series of sediment load for each grain size class, computed similarly to the total load but specific to each grain size. Sediment volume is also broken down according to each grain size class. The bulk flow result is an estimate of the combined water and sediment flow rates.