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For this 10-year master plan, Daniel and the AMT team provided a GIS database approach to determine optimal stormwater maintenance facility locations and eroded stream valleys in need of restoration. These databases included (1) 400 culverts with descriptions; (2) a breakdown of watershed features over 40 different subbasins; (3) 100 individual homeowner concerns, broken down […]
A rising concern to lake and reservoir water quality is pharmaceuticals and personal care products (PPCPs), which are increasingly ubiquitous in the environment. Many studies have examined the introduction of PPCPs to freshwater ecosystems through wastewater treatment, but less is known about how direct human interactions, such as swimming, may influence PPCP concentrations. We sampled […]
Direct modification of an ecosystem as a whole is beyond the technological, physical and financial limitations of society. However, the resilience of the processes within the ecosystem can be used to synergize an effect on the system as a whole given proper nurturing and support. The initiation of this process may require establishing a symbiotic […]
Urban lakes are common throughout the United States and are susceptible to anthropogenic inputs stemming from point and nonpoint source pollutions. In this study, effectiveness of an in situ water quality management strategy was investigated by employing phytoremediation and subsequent water quality modelling methodology for an urban lake, Lake Wire, in the downtown area of […]
In Virginia alone, there are 2,900 dams ranging from farm ponds to large reservoirs providing hydroelectric power and water supply. Approximately 360 of these dams are classified as potentially high hazard where failure would result in probable loss of life or serous economic damage. For dams where potential failure modes have been identified to have […]
Phytoplankton are primary producers which are critical for reservoir ecosystem function. However, certain phytoplankton, particularly cyanobacteria, can form noxious blooms in freshwater ecosystems. Epilimnetic mixing is a management strategy intended to disrupt surface scums of harmful cyanobacteria while promoting less-harmful phytoplankton taxa, such as diatoms. Many studies have examined the degree to which epilimnetic mixing […]
Anthropogenic activity is responsible for changing environmental conditions in many environments, including nutrient over-enrichment in lakes and coastal waters, and elevated temperatures and carbon dioxide concentrations in the atmosphere and water. Due to these changes, many lakes have become increasingly stratified and eutrophic. These factors create a perfect environment for the proliferation of cyanobacterial harmful […]
Harmful Algal Blooms (HABs) occur when aquatic conditions are optimal for algal growth, produce toxins that are harmful to humans and aquatic species, and are often triggered by warm temperatures and increased nutrient loads from human activity. Reactionary approaches can offer temporary solutions, but holistic site planning helps identify the full range of water quality […]
There are numerous lakes and ponds located throughout Virginia which pre-date present day stormwater design standards. In some cases, these facilities offer opportunities to assist municipalities in meeting Chesapeake Bay and Local TMDL requirements and improving water quality throughout the State. Loudoun County has identified many retrofit opportunities on publicly-owned land, but the number of […]
The Virginia Lakes and Watershed Association is a volunteer organization and its mission is to provide education on water resources in Virginia.
