Ground-water resources data for Baldwin County, Alabama

Robinson, James L.; Moreland, Richard S.; Clark, Amy E.

doi:10.3133/ofr96487

Cited by 10 publications

(3 citation statements)

References 3 publications

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“…Baldwin County has high rainfall (167 cm/year, Robinson et al, 1996) and lacks major river systems, so the recharge rate of the aquifers is high (Dowling et al, 2004). Most of the water in the aquifers in Baldwin County enters the Gulf of Mexico as SGD, making this pathway the most likely source of terrigenous nutrients to the five sites in Baldwin County (Dowling et al, 2004).…”

Section: Dischargementioning

confidence: 97%

Temporal and spatial variability in Pseudo-nitzschia spp. in Alabama coastal waters: A “hot spot” linked to submarine groundwater discharge?

et al. 2009

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Section: Dischargementioning

confidence: 97%

Temporal and spatial variability in Pseudo-nitzschia spp. in Alabama coastal waters: A “hot spot” linked to submarine groundwater discharge?

et al. 2009

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“…The nearly level to gently sloping relief (ranging from 0 m near the coastline to 45 m (above mean sea level [amsl]) in the northernmost extent of the study area) of Southern Baldwin County are representative of a typical coastal environment with sandy, highly permeable soils. Precipitation for the region averages between 165 and 167 cm/year (Chandler et al ; Robinson et al ; Kopaska‐Merkel and Moore ). Although surface runoff can occur in the region, especially during severe storms or hurricanes, most precipitation infiltrates to depth due the highly permeable soils and extensively agriculturally developed areas.…”

Section: Study Area and Descriptionmentioning

confidence: 99%

Characterization of Flow Dynamics and Vulnerability in a Coastal Aquifer System

Murgulet

Tick

2013

Groundwater

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Traditional aquifer vulnerability techniques primarily rely on spatial property data for a region and are limited by their ability to directly or indirectly assess flow and transport processes occurring from the surface to depth within an aquifer system. The main objective of this study was to investigate groundwater vulnerability in terms of aquifer interconnectivity and flow dynamics. A combination of stable isotopes, groundwater age-dating (radiocarbon), and geomorphic/geogenic spatial analyses was applied to a regional, highly developed coastal aquifer to explain the presence of nitrate at depth. The average δ(13) C value (-17.3 ± 2‰ VPDB, n = 27) is characteristic of groundwater originating from locally infiltrated precipitation through extensively cultivated soils. The average δ(18) O and δD values (-4.0 ± 0.1‰ VSMOW, n = 27; δD: -19.3 ± 1‰ VSMOW, n = 27, respectively) are similar to precipitation water derived from maritime sources feeding the region's surface water and groundwater. Stable and radioactive isotopes reveal significant mixing between shallow and deep aquifers due to high velocities, hydraulic connection, and input of local recharge water to depths. Groundwater overdevelopment enhances deeper and faster modern water downward flux, amplifying aquifer vulnerability. Therefore, aquifer vulnerability is a variable, dependent on the type and degree of stress conditions experienced by a groundwater system as well as the geospatial properties at the near surface.

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“…Little Lagoon is a shallow (∼1.5‐m average depth) lagoon with a surface area of 1,052 hectares located 20 km to the east of the mouth of Mobile Bay in the northern Gulf of Mexico (Figure 1). The hydrogeology of Little Lagoon is characterized by a sandy surficial aquifer with a thickness of 30 m and average annual precipitation exceeding 165 cm (Chandler et al., 1985; J. L. Robinson et al., 1996). Rapid infiltration through the sandy soils precludes surface runoff, and no defined drainage network exists in the lagoon's watershed.…”

Section: Setting Materials and Methodsmentioning

confidence: 99%

Atmospheric Groundwater Forcing of a Subterranean Estuary: A Seasonal Seawater Recirculation Process

Beebe

Huettemann

Webb

et al. 2022

Geophysical Research Letters

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Here we isolate groundwater responses to atmospheric forcing of surface water levels by relating anomalies in coastal aquifer hydraulic head time‐series to weather events. Our results demonstrate that atmospheric forcing has a greater effect on groundwater exchange and extended residence time over astronomical tidal pumping at times. During winter, atmospheric groundwater forcing was associated with winter storm passage and had a recurrence interval of approximately 7 days. During summer, atmospheric groundwater forcing was limited to weak diurnal atmospheric convection and infrequent tropical cyclone activity. Because winter storms and tropical cyclones commonly produce precipitation, atmospheric groundwater forcing can synergize with the timing of meteoric recharge producing periods of intense submarine groundwater discharge.

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Ground-water resources data for Baldwin County, Alabama

Cited by 10 publications

References 3 publications

Temporal and spatial variability in Pseudo-nitzschia spp. in Alabama coastal waters: A “hot spot” linked to submarine groundwater discharge?

Temporal and spatial variability in Pseudo-nitzschia spp. in Alabama coastal waters: A “hot spot” linked to submarine groundwater discharge?

Characterization of Flow Dynamics and Vulnerability in a Coastal Aquifer System

Atmospheric Groundwater Forcing of a Subterranean Estuary: A Seasonal Seawater Recirculation Process

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