2D Animations of Conservative
Tracer Scenarios

Scenario number	Tracer injection location	Flow condition
1	Highway 45 Bridge	High Low
2	Highway 412 Bridge	High Low
3	War Eagle Creek	High Low
4	Hickory Creek	High Low
5	Highway 12 Bridge	High Low
6	Prairie Creek	High Low
7	Henry Hollow	High Low
8	Indian Creek	High Low

To observe the fate and transport in Beaver Lake and simulate how the reservoir would react to the introduction of a conservative substance, or a worst-case spill scenario, a conservative tracer was introduced at several points in the Beaver Lake model under various flow conditions. Because the tracer is conservative, it does not decay or settle in the water column. The tracer was placed at eight locations in the model grid where a possible spill could occur by adding a tributary input at each of the locations indicated by scenarios 1-8 in fig. 4. A tributary does not add volume to the model grid, but allows for the addition of constituent mass and flow. The tracer was inserted at a concentration of 1,460,000,000 milligrams per liter and at a flow rate of 0.19 cubic meters per second over a 1-hour period. The high concentration was used to overcome the dilution effects of the reservoir so substantial changes in concentration could be observed in Beaver Lake. The response of the conservative tracer was evaluated at the locations and depths of the four water-supply intakes in Beaver Lake (fig. 4).