Evaluation and Documentation of Sjrwmd Groundwater Models Swup and Couaq for use by Permit Applicants.

摘要

In groundwater permit applications to the St. Johns River Water Management District (District), applicants may be required to address pumping impacts in terms of saltwater upconing and drawdown impacts. Extensive hydrogeological investigations that include numerical modeling may be required in some cases to address these issues. However, in other cases, analytical modeling techniques may be sufficient to assess impacts. In particular, analytical modeling techniques are useful in screening for impacts and/or conducting preliminary investigations that may indicate the need for more detailed investigations. The District currently utilizes several analytical groundwater models for these purposes, including a saltwater upconing model and a pumping impact model that are based on solutions by Motz (1992) and Denis and Motz (1998). For these two District models, there is a need to improve their utilization and prepare model documentation in a manner that will make these models more accessible to permit applicants and others through the Districts web site. To meet this need, the University of Florida (University) has evaluated the two existing models and modified the computer codes to enhance their capabilities and accessibility to permit applicants.