srry there isn't a trust lake in Pokemon diamond nor Pokemon pearl.
There is none.
There are no 'Grand Lakes' in Pokemon Diamond and Pearl, but there are the three lakes that have Uxie, Mespirit and Azelf.
If you have Pokemon Emerald in your GBA Slot (this also works for Pokemon Pearl and Diamond) Pokemon Platinum- Route 217, Lake Acuity Pokemon Diamond & Pearl- Route 217, Acuity Lakefront, Lake Acuity
you cant. Only in Pokemon diamond and pearl
There isn't a grand lake but there is a great marsh in pastoria city
Pokemon # 146 is Uxie in Pokemon diamond and Pearl and can be found in a cave at Lake Acuity just left of Snowpoint City. Pokemon # 147 Mesprit in Pokemon diamond and Pearl and can be found in a cave at Lake Verity just left of Twinleaf Town. Pokemon # 148 Azelf in Pokemon diamond and Pearl and can be found in a cave at Lake Valor between Pastoria City and Veilstone City. for a list of all other Pokemon you can check out this site... http://Pokemon.marriland.com/diamond_pearl/pokedex
The seventh gym in Pokemon Diamond, Pearl, and Platinum is located in Snowpoint City, which is to the East of Lake Acuity.
at the start of Pokemon pearl and diamond when you watch the tv and theres a program about a lake the Pokemon in the lake the Pokemon is the red garydos all so on Pokemon platuim Cyrus talks to mesprit at the lake
You surf there
you cant! that's only on diamond, pearl, platinum.
you defeat team galactic in the area and save the three pokemon from cyrus