Watermark.
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Switch site 38 sites · 11 basins 8 open

Each site is one Watermark investigation. The page color says what opens; the campus line is the build on the ground — two different clocks.

MAU Maumee Basin 9 sites
2MI The Two Miamis 9 sites
SE Southeastern Basins 12 sites
NE Northeast Basins 8 sites
The page — what opens on Watermark Open · Draftfull record Queued · Watchingpreview page Restrictedrequest access
The campus — the build on the ground Investigating Confirmed Under construction Operational
All 38 sites — the network index →
The Watermark network

The build-out, on the public record.

Watermark assembles the public record behind the hyperscale data-center build-out — 38 sites across 11 basins, each a point where compute meets ground, water, and power. Provenance-first, and built in the open.

Where the network is All 38 →
The Watermark network, mapped — 38 of 38 sites placed, 8 open to read. Lima — Ottawa River · Lima, OH, building, open to read BOSC Fort Wayne — Maumee headwaters, live, open to read GCP Urbana — Mad River · Great Miami, live, open to read URB Defiance — Maumee mainstem, queued DEF Findlay — Blanchard River, live, open to read FIN Toledo — Lucas Co WRRF, queued TOL Bowling Green · Middleton Twp — Portage · Maumee divide, live, open to read BGN Van Wert — Town Creek · Little Auglaize, live, open to read VWT Bryan — Prairie Creek · Tiffin River, queued BRY Ottawa — Blanchard River (lower), queued OTW Springfield — Mad River · Great Miami, queued SPR Xenia — Little Miami, queued XEN Dayton · WPAFB — Mad River · Great Miami, queued WPA Hamilton · Middletown — Great Miami (lower), queued HAM Troy · Piqua — Great Miami (upper), live, open to read TRP Sidney — Great Miami · headwaters, live, open to read SID Greenville · Darke Co — Stillwater · basin divide, queued GRV Wilmington — Todd Fork · Little Miami, queued WIL West Union · Adams Co — Ohio Brush Creek · Ohio River, queued WUN New Albany · Licking — Scioto ↔ Muskingum divide, tracked NAL Columbus — Scioto · Olentangy, tracked COL Coshocton — Tuscarawas + Walhonding, tracked CSH Piketon — Scioto River · PORTS, tracked PIK Sandusky · Perkins Twp — Sandusky Bay · Lake Erie, tracked SAN Mansfield — Rocky Fork Mohican · Muskingum, tracked MFD Portsmouth · Green Twp — Ohio River · lower Scioto, tracked PSM Newark — Licking River, tracked NWK Zanesville — Muskingum mainstem, tracked ZAN Fremont · Clyde — Lower Sandusky, tracked FRE Tiffin — Sandusky (mid), tracked TIF Bucyrus — Sandusky headwaters, tracked BUC Cleveland — Lower Cuyahoga, tracked CLE Akron — Upper Cuyahoga · CVNP, tracked AKR Lordstown · Warren — Upper Mahoning, tracked LRD Youngstown — Mahoning mainstem, tracked YNG Lancaster — Upper Hocking, tracked LAN Athens — Lower Hocking, tracked ATH Logan — Hocking Hills, tracked LOG
38
Sites
11
Basins
3,704
Documents
08
Open to read

38 of 38 sites placed, 8 open to read. Marker positions are each site's real coordinates; the state outline and the continental divide are simplified, not to scale.

A marker is the watershed point — the place the record is filed against. It is not a facility, a parcel, or a plant, and most of these sites have no located facility on the record at all.

Five ways to read a buildout

— what it takes, what it costs, and who decided. All five lenses →

The open questions

— why the build-out is happening here at all. Open the scorecard →

Unlike a lens, a hypothesis has a verdict to reach — each is under test, scored against every site, and none is settled. A lens describes; these argue.

Start here
Across the network
— the 8 deepest-assembled sites, by readiness tier. See all 38 →