Watermark.
Zanesville
Switch site 35 sites · 10 basins2 states Group by
OH Ohio 34
BOSC BOSC Lima Ottawa River · Lima, OH Building Under construction #1261 URB Urbana Mad River · Great Miami Live Investigating #1263 DEF Defiance Maumee mainstem Queued Investigating #1264 FIN Findlay Blanchard River Queued Investigating #1265 TOL Toledo Lucas Co WRRF Queued Investigating #1266 VWT Van Wert Town Creek · Little Auglaize Queued Investigating #1267 BRY Bryan Prairie Creek · Tiffin River Queued Investigating #1268 OTW Ottawa Blanchard River (lower) Queued Investigating #1269 SPR Springfield Mad River · Great Miami Queued Investigating #1270 XEN Xenia Little Miami Queued Investigating #1271 WPA Dayton · WPAFB Mad River · Great Miami Queued Investigating #1272 HAM Hamilton · Middletown Great Miami (lower) Queued Investigating #1273 TRP Troy · Piqua Great Miami (upper) Queued Investigating #1274 SID Sidney Great Miami · headwaters Queued Investigating #1275 GRV Greenville · Darke Co Stillwater · basin divide Queued Investigating #1276 WIL Wilmington Todd Fork · Little Miami Queued Investigating #1277 WUN West Union · Adams Co Ohio Brush Creek · Ohio River Queued Investigating #1278 NAL New Albany · Licking Scioto ↔ Muskingum divide Tracking Investigating #1279 COL Columbus Scioto · Olentangy Tracking Investigating #1280 CSH Coshocton Tuscarawas + Walhonding Tracking Investigating #1281 PIK Piketon Scioto River · PORTS Tracking Investigating #1282 SAN Sandusky · Perkins Twp Sandusky Bay · Lake Erie Tracking Investigating #1283 NWK Newark Licking River Tracking Investigating #1284 ZAN Zanesville Muskingum mainstem Tracking Investigating #1285 FRE Fremont · Clyde Lower Sandusky Tracking Investigating #1286 TIF Tiffin Sandusky (mid) Tracking Investigating #1287 BUC Bucyrus Sandusky headwaters Tracking Investigating #1288 CLE Cleveland Lower Cuyahoga Tracking Investigating #1289 AKR Akron Upper Cuyahoga · CVNP Tracking Investigating #1290 LRD Lordstown · Warren Upper Mahoning Tracking Investigating #1291 YNG Youngstown Mahoning mainstem Tracking Investigating #1292 LAN Lancaster Upper Hocking Tracking Investigating #1293 ATH Athens Lower Hocking Tracking Investigating #1294 LOG Logan Hocking Hills Tracking Investigating #1295
MAU Maumee Basin 8 sites
2MI The Two Miamis 9 sites
SE Southeastern Basins 10 sites
NE Northeast Basins 8 sites
Each site is a section of the Watermark platform — pivoted by basinstate. Live & building sites open; queued and tracking sites route to their coming-soon / watch page.
Switch site 35 sites · 10 basins2 states 35 open Group by

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

OH Ohio 34
BOSC BOSC Lima Ottawa River · Lima, OH Draft Under construction #1261 URB Urbana Mad River · Great Miami Open Investigating #1263 DEF Defiance Maumee mainstem Queued Investigating #1264 FIN Findlay Blanchard River Queued Investigating #1265 TOL Toledo Lucas Co WRRF Queued Investigating #1266 VWT Van Wert Town Creek · Little Auglaize Queued Investigating #1267 BRY Bryan Prairie Creek · Tiffin River Queued Investigating #1268 OTW Ottawa Blanchard River (lower) Queued Investigating #1269 SPR Springfield Mad River · Great Miami Queued Investigating #1270 XEN Xenia Little Miami Queued Investigating #1271 WPA Dayton · WPAFB Mad River · Great Miami Queued Investigating #1272 HAM Hamilton · Middletown Great Miami (lower) Queued Investigating #1273 TRP Troy · Piqua Great Miami (upper) Queued Investigating #1274 SID Sidney Great Miami · headwaters Queued Investigating #1275 GRV Greenville · Darke Co Stillwater · basin divide Queued Investigating #1276 WIL Wilmington Todd Fork · Little Miami Queued Investigating #1277 WUN West Union · Adams Co Ohio Brush Creek · Ohio River Queued Investigating #1278 NAL New Albany · Licking Scioto ↔ Muskingum divide Watching Investigating #1279 COL Columbus Scioto · Olentangy Watching Investigating #1280 CSH Coshocton Tuscarawas + Walhonding Watching Investigating #1281 PIK Piketon Scioto River · PORTS Watching Investigating #1282 SAN Sandusky · Perkins Twp Sandusky Bay · Lake Erie Watching Investigating #1283 NWK Newark Licking River Watching Investigating #1284 ZAN Zanesville Muskingum mainstem Watching Investigating #1285 FRE Fremont · Clyde Lower Sandusky Watching Investigating #1286 TIF Tiffin Sandusky (mid) Watching Investigating #1287 BUC Bucyrus Sandusky headwaters Watching Investigating #1288 CLE Cleveland Lower Cuyahoga Watching Investigating #1289 AKR Akron Upper Cuyahoga · CVNP Watching Investigating #1290 LRD Lordstown · Warren Upper Mahoning Watching Investigating #1291 YNG Youngstown Mahoning mainstem Watching Investigating #1292 LAN Lancaster Upper Hocking Watching Investigating #1293 ATH Athens Lower Hocking Watching Investigating #1294 LOG Logan Hocking Hills Watching Investigating #1295
MAU Maumee Basin 8 sites
2MI The Two Miamis 9 sites
SE Southeastern Basins 10 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
Tracking
Watermark network · Muskingum mainstem · tracking issue #1285

Zanesville is being assembled.

A record site for the Muskingum mainstem. We're generalizing the Watermark platform from the Lima reference build out across the watershed network — this site is tracked for a future build.

Build status 0 of 3 stages started
queued
Site scaffold
Routes and the forest chrome wired up for the Zanesville record.
queued
Data tier
Muskingum mainstem sources ingested, structured, and provenance-linked.
queued
Frontend
Record screens, profiles, timeline, and the story.
What will land here — the same record grammar as Lima
Records
The source record
Documents, structured records, and the external reference datasets behind them.
Chronology
The timeline
Events along the Muskingum mainstem, each tied back to its source.
People & places
Profiles
The entities, agencies, and sites that recur across the record.
Narrative
The story
A reading path through the record for first-time visitors.
Get notified
Know when Zanesville goes live.

Follow the tracking issue — one update when the Muskingum mainstem record opens. No list, no noise.

Watch #1285 on GitHub
Complete
See the Lima build

Watermark — the reference site on the Ottawa River, Lima OH. The complete record, timeline, and story that Zanesville is modeled on.

Explore the reference site ›

Provenance-first, from the first commit. Like every Watermark site, Zanesville will carry a source for every figure, label its inferences, and show redactions rather than hide them. Nothing here is a verdict.