| Become saturated, as in a flood | 31 |
| ABBA's first hit | 20 |
| Napoleon's downfall | 23 |
| 1815 battle site | 16 |
| Where Wellington defeated Napoleon | 34 |
| Napoleon's undoing | 22 |
| Decisive downfall | 17 |
| Utter fiasco | 12 |
| Undoing, figuratively | 21 |
| Napoleon's denouement | 25 |
| London station | 14 |
| London bridge | 13 |
| Iowan city or Belgian town | 26 |
| Ignominious end | 15 |
| Final defeat | 12 |
| Belgium city where Napoleon suffered a crushing defeat | 54 |
| Battle that ended the Hundred Days | 34 |
| Battle of ___ (1815 conflict) | 29 |
| Any decisive defeat | 19 |
| A London bridge | 15 |
| Canadian city named for a historic battle site | 46 |
| Crushing defeats | 16 |
| 1967 Kinks tune | 15 |
| Railway terminus with the Victory Arch | 38 |
| London rail hub | 15 |
| Sometime city flood source | 26 |
| Principal pipe | 14 |
| Major pipe | 10 |
| Conduit of a sort | 17 |
| Reservoir pipes | 15 |
| Skilled boater | 14 |
| Crabber, for one | 16 |
| Paper impression | 16 |
| Stationery logo | 15 |
| Identifiers, of a kind | 22 |
| Summer picnic fruit | 19 |
| Picnic fruit | 12 |
| Large fruit or its vine | 23 |
| Juicy picnic treat | 18 |
| Jolly Rancher flavor | 20 |
| Fruit with a green rind | 23 |
| Fourth of July dessert | 22 |
| Dessert at the Orchestral Inn | 29 |
| Godfrey Cambridge satire of 1970 | 32 |
| Fruitful land | 13 |
| Some picnic remains, perhaps | 28 |
| Utility measurer | 16 |
| Something read by a utility worker | 34 |
| It's read regularly | 23 |
| It's read for flow | 22 |
| Home utility monitor | 20 |
| Distance unit for competitive swimming? | 39 |
| Device that determines the amount of a utility bill | 51 |
| 39.37 inches of stream? | 23 |
| Source of hydropower | 20 |
| Venomous semiaquatic snake | 26 |
| Venomous semiaquatic creature | 29 |
| Swamp snake | 11 |
| Cottonmouth | 11 |
| Handel poolside offering | 24 |
| "And ___...?" | 23 |
| Naiad, Nereid, or Oceanid | 25 |
| Tree of Southeastern swamplands | 31 |
| Birds called "dippers" | 32 |
| Something that can't be undone | 34 |
| Yesterday's tears, so to speak | 34 |
| Too-late situation | 18 |
| The irrecoverable past | 22 |
| T.V.A. concern | 14 |
| Something beyond recall | 23 |
| Relative of spilt milk | 22 |
| Item beyond recall | 18 |
| Bygone events | 13 |
| Disaster at a flooded smokehouse? | 33 |
| Container for Jack and Jill | 27 |
| Artist's alternative | 24 |
| Recreational venue with pools and splash pads | 45 |
| Summer recreation area | 22 |
| Capybara | 8 |
| Plumbing conduit | 16 |
| Main, maybe | 11 |
| Main network | 12 |
| Squirt's gun? | 17 |
| Poolside threat | 15 |
| Container on a table | 20 |
| Sport with a goalkeeper | 23 |
| Aquatic sport | 13 |
| Pool party activity | 19 |
| T.V.A. largess | 14 |
| Energy of a kind | 16 |
| Impervious to H2O | 17 |
| British raincoat | 16 |
| Rainy-day gear | 14 |
| Diver's timer | 17 |
| Shoes for a cruise? | 19 |
| Radiator hoses may lead to them | 31 |
| Aquatic footwear? | 17 |
| Pond rodent | 11 |
| Petty pier thief | 16 |
| Mink prey | 9 |