In the waters of Valley Creek near Birmingham, Alabama, three small fish—easily overlooked—thrive: the Birmingham darter, the watercress darter, and the blackbanded darter. These olive-toned, banded fish, each about two inches long, are adapted for life at the stream’s bottom, using their large pectoral fins to perch among gravel.
For a long time, these fish were believed to be variations of the same species. However, in April 2025, genomic analysis revealed a more delicate and significant discovery: the Birmingham darter is a distinct species, unique to this region. Unlike its counterparts, it inhabits small tributaries and headwater streams—areas at high risk of drying, warming, and disturbance.
Currently, only a few populations of the Birmingham darter are known, restricted to the upper Valley Creek watershed and some nearby tributaries, covering about 65 square miles. Recent surveys have extended its known habitat to Little Blue Creek, Nabors Branch, and Halls Creek, though at least one population may no longer exist. Counting them is challenging, but all signs indicate a species on the edge of extinction.
The Birmingham darter is not alone in its precarious position. Endangered mussels in Valley Creek, such as the upland combshell and triangular kidneyshell, rely on darters for reproduction. Their method is both fascinating and fragile.
These mussels release mucus or fleshy lures into the water that mimic small fish, complete with an eyespot. When a darter attempts to feed, it ingests tiny larvae that attach to its gills—resembling tiny Pac-Men—where they develop. This symbiotic relationship is critical; without the host fish, the larvae perish within days. Without mussels, Valley Creek loses essential natural processes, including water filtration, nutrient cycling, and ecosystem balance.
Valley Creek has experienced similar losses before. A mussel species that depended on American eels vanished when dams obstructed eel migration. Without its host, it could not reproduce and became extinct.
Fish in Valley Creek, including darters and redeye bass, require cool, flowing water sustained by groundwater-fed baseflow, particularly in late summer when rainfall is limited.
The threat they face is not just from pollutants or disturbances but from a potential hydrologic collapse. If groundwater recharge decreases, if headwater streams dry up, or if flow becomes inconsistent in August and September, the habitat will vanish—not gradually, but all at once. Even a resilient system like Valley Creek cannot endure without water.
The Opportunity
Amidst this fragile ecosystem emerges Project Marvel.
Bessemer has rezoned 1,600 acres along Valley Creek for a campus of 18 data center buildings, a massive, water- and energy-intensive development at the edge of a strained watershed.
Initially, the risks are evident. Replacing forest with infrastructure such as roofs and roads reduces the land’s ability to absorb rain. Water that once soaked into the soil and gradually fed the creek now runs off quickly, causing floods during wet months and depleting the creek in dry ones. This results in a more volatile system with higher peaks and lower lows.
Given the steep terrain of the Project Marvel site, flash flooding is common. When it rains, water moves rapidly. The flow in Valley Creek can jump from about 70 cubic feet per second to over 400 cfs in hours, turning the creek into a swift, erosive force.
With increasingly extreme weather—more rain in shorter periods—these spikes are becoming more intense. More water arrives at once, runs off quickly, and exits just as fast.
This is Valley Creek’s dilemma: too much water during rains and not enough when needed. The system doesn’t lack water; it lacks storage, infiltration, and timing.
This could signal the end for Valley Creek as we know it.
However, Project Marvel also brings a new level of control to the watershed.
Data centers are not passive water consumers. They are engineered systems—precise, monitored, and responsive. These qualities, if applied outward, can manage water as well as consume it.
Instead of continuously drawing water from the creek, the solution is to control and reshape water usage.
Project Marvel can capture high flows during storms and store them in cisterns, underground vaults, or managed basins.
By turning stormwater into an asset, reducing peak flows, and retaining water for later use, stormwater becomes a resource instead of waste. This ensures a secure water supply for later use by reducing peak flows and holding water within the watershed.
The data center can depend on stored water during the hot, dry days of August and September when the creek flow is 1 to 3 million gallons per day, and Project Marvel requires 2 million gallons per day. Leave the creek undisturbed when the Birmingham darter is most at risk. No surface-water withdrawals during August and September. When the Birmingham darter faces the greatest risk, let it thrive. Keep the creek untouched.
Water storage alone is insufficient. The system must also restore lost ground: the land’s ability to retain water. Bessemer has rezoned 1,600 acres along Valley Creek for a campus of 18 data center buildings. Today, the site supports oak-hickory-sweetgum forests and loblolly pine and hardwood understory forests, including dogwoods, tupelo, holly, redbud, serviceberry, and witch hazel.
These forests capture rainfall, build soil, and enable water infiltration and groundwater recharge. Their removal—and subsequent compaction and grading—eliminates this function.
Using methods such as Miyawaki plantings, diverse and dense native forests can rapidly build soil to rejuvenate degraded industrial land, floodplain edges, and abandoned commercial sites. Over time, these forests increase water infiltration into the ground, build organic matter and humus, store more water in the ground, and gradually release cool water back into streams, particularly during dry and hot periods.
With careful, intelligent management, Project Marvel becomes more than a development. It creates a water infrastructure for the watershed. By capturing excess water during flash floods, storing it for dry spells, recharging groundwater through restored landscapes, and maintaining flow when needed most, the data center becomes a marvel for the Valley Creek watershed.
This approach aligns with the Birmingham darter’s needs. Reliable, cool, flowing water in late summer is more achievable than pristine wilderness. If Project Marvel is designed with this goal, it will be recognized as the project that learned how to sustain Valley Creek.
What Must Be Required
The survival of the Birmingham darter and Valley Creek’s integrity cannot rely on voluntary measures, best practices, or future promises. Clear, enforceable standards must be embedded in permits, approvals, and long-term oversight.
For Project Marvel to be a benefit, not a burden, three requirements must be met: protect the creek when it’s vulnerable, capture and manage water when it’s plentiful, and restore the land’s water-holding capacity.
No surface-water withdrawals from Valley Creek during August and September, when streamflow is lowest, water temperature is highest, dissolved oxygen is limited, and aquatic species are stressed.
At this time, even small withdrawals can have significant impacts. This standard must be included in permits, continuously monitored, and publicly reported. If flows fall below a defined ecological threshold, withdrawals should be restricted even outside these months.
Project Marvel must operate as a closed-loop system during dry periods, not a continuous streamflow user. This requires stormwater capture systems sized for extreme rainfall events; cisterns or underground storage sufficient for August–September demand; and redundant storage to ensure reliability.
A performance-based requirement could involve demonstrating the ability to meet all cooling water needs for at least 60 consecutive summer days without surface-water withdrawals. This shifts the burden from the creek to the project.
Traditional stormwater permits focus on peak flow reduction. This is insufficient. What matters ecologically is the full flow regime—how water moves through the system over time. Project Marvel should be required to match pre-development runoff volume, maintain infiltration rates similar to forested conditions, and limit rapid runoff that causes flash flooding. The goal is not just to prevent flooding but to preserve the water timing and distribution that sustains the creek.
Because 1,600 acres cannot be fully replaced onsite, restoration must extend across the watershed. A binding offset requirement should include restoring two to five acres for every acre of effective impervious surface not fully mitigated onsite.
Priority restoration areas include headwater tributaries, floodplain corridors, and degraded industrial and commercial land. These restorations must do more than plant trees. They must rebuild soil structure, increase infiltration, and reconnect groundwater to streams. Performance metrics should include soil organic matter, infiltration rates, vegetation survival, and canopy development.
Streams cannot function without shade, stability, and filtration. Requirements should include wide, continuous riparian buffers along all streams and tributaries, no clearing, grading, or compaction within these zones, and active restoration where buffers are degraded. These buffers will reduce water temperature, stabilize banks, filter pollutants, and provide habitat continuity.
None of these efforts matter without accountability. Project Marvel must include continuous monitoring of streamflow, water temperature, and withdrawal volumes. Required are public reporting of data and independent oversight. There must be clear consequences for non-compliance. Without enforcement, standards become suggestions.
The past is no longer a reliable guide. Permits must account for more intense rainfall events, longer dry periods, and increased variability. This means designing for larger storm capture, longer storage duration, and more conservative withdrawal limits.
The guiding principle should be simple and measurable. No net loss of groundwater recharge. No net increase in damaging runoff. No degradation of summer baseflow. If those conditions are met, the system holds. If not, the system fails.
Project Marvel will reshape the Valley Creek watershed. That is already decided. What remains undecided is whether it will continue a trend of degradation or become a turning point—where development is required not only to avoid harm but to repair what has been lost.
The Birmingham darter cannot negotiate, adapt, or relocate. It depends entirely on the decisions made here. Those decisions must be precise. They must be enforceable. And they must be made now.
About the Author
Dr. Rob Moir is a nationally recognized and award-winning environmentalist. He is the president and executive director of the Ocean River Institute, a nonprofit based in Cambridge, MA, that provides expertise, services, resources, and information not readily available locally to support community efforts. Please visit www.oceanriver.org for more information.
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