**CAM102 · r3 · 2026-09-07 · Campaign and District Designer · In review; proposal. Nothing here is an owner approval, a validated number, or tested behaviour.** r2 implements [PMR007 §1](/Hold%20the%20Flood/PM%20Reviews/PMR007) and REV104-16/17/18. **The r1 expedition was not legal and is replaced, not patched**: it lit a lure from batteries that start empty, held that lure for five minutes when a full bank buys a hundred lit seconds, then had a crowd spread while a reachable lit lure existed, and drew a rack five cells over three. r2 supplies a legal 2×4 rack, earned charge with an explicit spend-and-loss ledger, the lure's real hundred seconds and what retargets when it expires, two free cells for the retrieval, an **intake-local dispatch marker** so the flash-location convention holds, and the bank's **found state of three engaged clutches** that REV104-18 requires to explain the districts already announced. §11 corrects the cable reel to Equipment's U6. r1 is in [page history](/Hold%20the%20Flood/Districts/The%20Exchange/history) r3 corrects a broken citation in §6: the bank's pricing is the lead's at DES104 §3.4, and the Districts §6 this page cited does not exist.

| Panel position | Powered branch | Intake selected | What flashes at a dispatch |

| Dock | The dock end: b1 lit, the gallery's dock run live, the tail race's lower reach energised | The upper landing — always; the panel cannot change it | **The landing's own intake marker** |

**r1 had the panel flash a beacon at the far end of the hall from the only way in, and [PMR007](/Hold%20the%20Flood/PM%20Reviews/PMR007) is right that this breaks the convention the whole campaign has taught** — that the light which flashes is where the bodies appear. The fix costs nothing and improves the district: **the Exchange has one way in, so it has an intake marker at the landing, and that is what flashes.** The three beacons are lures and never intake selectors.

So this district splits in two what every other district joins. Elsewhere the panel chooses where the Flood enters *and* where it then goes; here it chooses only where it goes. **The player meets, for one district, the half of the panel that is pure lure** — which is the cleanest possible statement of the distinction the campaign has been building since the pumping district's two cables, and it is why this district is worth visiting even though it holds nothing. Pursuit range is about ten metres (contract §3), and the floor is wide enough that a body at the gallery wall does not chase a surveyor at the race.

*Eight cells, **two rows of four** (D023). C coil (2 cells), B battery, I insulation, K kit, L portable beacon, S salvage bundle. r1 drew five over three, which is not a legal rack.*

- **The cacher** carries charge into the one district where carrying charge is hunted. A Carrier's target is the nearest reachable loose charge **within its acquisition range** (contract §3, R5) — so it is not that any Carrier anywhere comes for you, it is that one close enough will, and the counterplay is distance as much as quantity. The cacher's play is to make that deliberate: **plant the beacon and a battery, and let the loose charge be somewhere you are not.** The coil is aboard because the tail race is the one water in the district.

**The constraint that makes both interesting, and which r1 got wrong.** Batteries start empty every expedition; charge resets ([Design Document §10](/Hold%20the%20Flood/Design%20Document#10-progression-and-persistence)). **A lit portable beacon drains one unit every ten seconds, so a full bank of ten buys a hundred lit seconds and no more** ([Campaign](/Hold%20the%20Flood/Campaign), the lure's number). And a coil discharge spends a full bank. **So one filled battery buys either a hundred seconds of lure or one discharge, never both** — and in a ten-minute district there is rarely time to fill two. That is the decision this district actually poses, and §7 is built on it.

**The bank's pricing is not restated here.** It is stated once, as a rule, by the lead at [DES104 §3.4](/Hold%20the%20Flood/Campaign#34-the-exchange-in-outline): a lit position gives the player the forecast and the announced, routable surge in that district, and a dark one takes both away there, so withholding the Flood from a district means giving up reading it. **r1 and r2 of this page also cited a §6 on [Districts](/Hold%20the%20Flood/Districts) for that rule. There is no such section and there never was** — the pricing was drafted for a page that was never published, and the citation was carried forward without being followed. Corrected here rather than by adding a duplicate somewhere to make the link true. What belongs here is the **found state** and the **local** cost of changing it.

**The found state: three clutches engaged, on Pumping, Lock Flight and Tram Incline.** This is REV104-18, which [PMR007](/Hold%20the%20Flood/PM%20Reviews/PMR007) correctly calls a campaign dependency rather than a footnote: the player has by now had announced dispatches in three districts, and two engaged clutches cannot explain three announced districts. **The answer is that the bank drives three, and the player finds it already set to exactly the three districts they have been visiting** — which is not a coincidence to be explained away but the district's best single moment, because it tells the player that the route they thought they chose was the route something upstream had already permitted.

**I have not adopted the critic's seized-Pumping-clutch candidate**, and [PMR007](/Hold%20the%20Flood/PM%20Reviews/PMR007) is right to make that an explicit choice rather than a preserved ambiguity: a seized clutch on Pumping would mean the player can never darken their opening district, and darkening Pumping is the campaign's best worked example of a later discovery changing an earlier return ([Districts §4](/Hold%20the%20Flood/Districts#4-the-progression-map-main-route-an-optional-discovery-and-a-later-discovery-that-changes-an-earlier-return)). **Three live clutches keeps that and costs nothing.** The seized fourth position stays as it was: visibly seized, never usable, and its repair is the head-works' business rather than this district's.

**r1's scene was not legal and is replaced.** The corrections [PMR007](/Hold%20the%20Flood/PM%20Reviews/PMR007) and REV104-16/17 ask for are all in the ledger below rather than in prose around it.

**Declared setup.** Middle campaign, ten-minute expedition, dispatches at 3:00 and 7:00, evacuation from 10:00. The player wants the **Collector** permitted and will give up the **Tram Incline** for it. Bank found engaged on Pumping, Lock Flight, Tram. Rack: **the cacher** — C C B L / B I K S, B1 linked to the coil, B2 to the beacon. **Both batteries empty**, as they are at the start of every expedition. Panel found on **Head**, so b3 is lit at the bank end. The hall's standing stragglers are its own: this room is never quiet, which is what makes charge earnable here before a surge lands.

| Time | What happens | B1 | B2 | Ledger |

**What the expedition was about.** Not the bank — that was forty-five seconds of it. It was the decision at **4:30**, which is the district's whole design in one choice: **a single full bank buys either the walk or the way home, and the player who spends it on the walk comes back through a spreading crowd with no coil.** A dry hand makes the same trip with no decision, no lure and no risk of that particular failure, and has to time the walk against the dispatch instead.

**Why the Grounder is placed there rather than earlier.** It makes a plan expire at the moment the plan has already been paid for. Had the lure still been lit at 9:00 the crowd could not have spread at all — a reachable lit beacon forbids it — which is exactly the illegal move r1 made and PMR007 caught. **The scene now works because the lure ran out, not despite it.**

- **The Grounder is what makes a plan expire**, and this district is where that reads best: the gallery is at head height along one wall, so a Grounder is visible climbing it, and the player watches their arrangement come apart with time to answer. **Placement proposal: at most one per surge, never in the first surge of a first visit, and best in the second** — where §7 puts it, because a plan that expires after it has been paid for teaches more than one that never forms. Never place one where it would darken the only lit beacon while the player has no charge and no route: that is not a plan expiring, it is a trap.

- **[EQP101](/Hold%20the%20Flood/Equipment) — corrected at r2.** r1 described the cable reel as joining two *wet* points, which was the r4 contract's wording; [contract r5](/Hold%20the%20Flood/Mechanics/Power%20And%20Attraction) restates it as Equipment's **U6, a bridge between exposed power terminals**. That makes it a far better fit for this district than r1 allowed — a dry hall whose gallery carries live runs is exactly where bridging terminals is worth two cells. **I have still kept it out of both loadouts in §4**, because the two the district needs to contrast are the one that carries charge and the one that carries none, and a third rack would blur that. A reel loadout here is a real third answer and Equipment is better placed to draw it.