Forced: If Banks of the Anduin leaves play, return it to the top of the encounter deck instead of placing it in the discard pile.
Here and there through openings Frodo could catch sudden glimpses of rolling mounds, and far beyond them hills in the sunset, and away on the edge of sight a dark line, where marches the southernmost ranks of the Misty Mountains.
–The Fellowship of the Ring
Forced: If Banks of the Anduin leaves play, return it to the top of the encounter deck instead of placing it in the discard pile.
Here and there through openings Frodo could catch sudden glimpses of rolling mounds, and far beyond them hills in the sunset, and away on the edge of sight a dark line, where marches the southernmost ranks of the Misty Mountains.
–The Fellowship of the Ring
While River Ninglor is the active location, remove 1 progress token from it and from the current quest at the end of each round.
Shadow: Remove 1 progress token from the current quest. (2 progress tokens instead if this attack is undefended.)
While The West Bank is the active location, attachment and event cards cost 1 additional matching resource to play from hand.
Shadow: If you do not control at least 1 hero with a Clue card attached, double this enemy's base 
for this attack.
Immune to player card effects.
Players cannot travel to The Carrock except through quest card effects.
While The Carrock is the active location, Troll enemies get +1 and +1 
While it is in the staging area, River Langflood gets +1 for each Troll enemy in play.
Immune to player card effects.
The Old Ford gets +5 quest points for each enemy in play.
Forced: After The Old Ford becomes the active location, each enemy in the staging area makes an immediate attack against the first player.
Forced: When Wooded Riverbank is explored, put the top card of the Evil Creatures deck into play engaged with the first player.
Shadow: Deal 1 damage to the defending character.
Immune to player card effects.
Forced: When Woodmen Village is explored, add the top card of the Evil Creatures deck to the staging area. Then, flip over Woodmen Village and attach Haldan to the just-added enemy as a guarded objective.
While River Running is in the staging area, enemies cannot be optionally engaged.
Travel: The first player engages the highest engagement cost enemy in the staging area.
...below them were trees that looked like oaks and elms, and wide grass lands, and a river running through it all.
–The Hobbit
While Exposed Riverbank is in the staging area, it gains:"Forced: After a 'when revealed' effect is canceled, place 1 resource on Easterling Pursuit."
Travel: Place 1 resource on Easterling Pursuit.
While Banks of Morthond is the active location, each location in the staging area gets -1
Shadow: If this attack destroys a character, add 1 progress to the current Night objective.
Each card revealed by the encounter deck gains doomed X. X is the number of progress tokens on this card.
Shadow: If this attack is undefended, put A Flooded Ford into the staging area with 1 progress token on it.
Each Mordor enemy with at least 1 Clue card attached gets +2
Shadow: Attacking enemy gets +1 for each Clue card in play until the end of the round.
While the current quest has battle, Cormallen Fields gets +2
While the current quest has siege, when faced with the option to travel, the players must travel to Cormallen Fields, if able.
If Anduin Wharf has 6 or more damage, discard it and reveal 2 cards from the top of the encounter deck.
While Anduin Wharf is the active location, allies cost 1 additional matching resource to play from hand.
Forced: At the beginning of the refresh phase, place the top card of the encounter discard pile on the bottom of the encounter deck and raise each player's threat bu that card's
I don't know what river is way, a rushing red one, swollen with the rains of the last few days... –The Hobbit