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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
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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
Building
The record
Record · Permits

Allen County American II Wastewater Treatment Plant (WWTP)

oepa-2PH00006-american-ii-fact-sheet
[verified]
↩ seen in the story Chapter 04 · What it does to the waterresume the story ›
Fields
facility_name
Allen County American II Wastewater Treatment Plant (WWTP)
permit_no
2PH00006*LD
permit_action
renewal
applicant
Allen County Board of Commissioners, 3230 North Cole Street, Lima, OH 45801
application_no
OH0037338
public_notice_no
211697
public_notice_date
2025-04-28
comment_period_end
2025-05-28
facility_address
American II WWTP, 4140 Diller Road, Lima, OH 45807, Allen County
discharge_address
receiving_water
Dug Run
stream_network
Ottawa River, Auglaize River, Maumee River, Maumee Bay, Lake Erie
note
Revised Final June 2025. Permit action described as renewal throughout. Outfall 001 referenced in tables and text (e.g., Table 12, influent monitoring station 601). No discharge address distinct from facility address.
outfalls
  • 001
oepa/oepa-2PH00006-american-ii-fact-sheet.npdes.yaml · · oepa

How we read it. The block above is the answer; the teardown below is the working — the same record, slowed down so the figure can be checked.

The teardown · run on this id
flow
Record Teardown

NPDES fact sheet — the 7Q10 screen

Ohio EPA · American II WWTP · permit 2PH00006 (Dug Run)
● in the published bundle
Permit fact sheet · text-native
① The source
facility_name
Allen County American II Wastewater Treatment Plant (WWTP)
permit_no
2PH00006*LD
permit_action
renewal
applicant
Allen County Board of Commissioners, 3230 North Cole Street, Lima, OH 45801
application_no
OH0037338
public_notice_no
211697
public_notice_date
2025-04-28

View the source document →

Stream Flows table · Ohio EPA · NPDES fact sheets
7Q10 values are read from the Ohio EPA fact sheets committed in the corpus; the fact-sheet PDFs are available on request.
② What we read from it
Receiving water
Dug Run · impaired
7Q10 design low flow
0.78 cfs
1Q10 (driest week)
0.6 cfs
Summer 30Q10
0.96 cfs
Stated acute dilution
1.3 : 1
Ottawa mainstem 7Q10
0.2 cfs
Ottawa 1Q10 (driest week)
0 cfs · nearly dry
● figures read live from the published record · ~ markers preserved as approximate
③ What it reveals

Ohio EPA sizes every discharge against the stream's design low flow — and the Ottawa this project discharges into runs at just 0.2 cfs, dropping to zero in the driest weeks. The tributaries are worse: American II's own fact sheet states a dilution of barely 1.3 to 1. The receiving water is near-undiluted before this project adds a drop.

④ How to check it
[verified]fact-sheet 7Q10
Record Teardown

NPDES fact sheet — the 7Q10 screen

Ohio EPA · American II WWTP · permit 2PH00006 (Dug Run)
● in the published bundle
Permit fact sheet · text-native
① The source
facility_name
Allen County American II Wastewater Treatment Plant (WWTP)
permit_no
2PH00006*LD
permit_action
renewal
applicant
Allen County Board of Commissioners, 3230 North Cole Street, Lima, OH 45801
application_no
OH0037338

View the source document →

Stream Flows table · Ohio EPA · NPDES fact sheets
7Q10 values are read from the Ohio EPA fact sheets committed in the corpus; the fact-sheet PDFs are available on request.
② What we read from it
Receiving water
Dug Run · impaired
7Q10 design low flow
0.78 cfs
1Q10 (driest week)
0.6 cfs
Summer 30Q10
0.96 cfs
Stated acute dilution
1.3 : 1
Ottawa mainstem 7Q10
0.2 cfs
Ottawa 1Q10 (driest week)
0 cfs · nearly dry
③ What it reveals

Ohio EPA sizes every discharge against the stream's design low flow — and the Ottawa this project discharges into runs at just 0.2 cfs, dropping to zero in the driest weeks. The tributaries are worse: American II's own fact sheet states a dilution of barely 1.3 to 1. The receiving water is near-undiluted before this project adds a drop.

④ How to check it

Same five beats, two shapes: split for a clean two-column source, scroll for the vertical reflow . The flow is a choice on the screen — the record data never changes.