I can't remember the exact name of the lake but it is just outside the village of Walgrave. It is only about 1 1/2 acxres in size but boy is it an exciting lake. I have fished it only 10 times but during those sessions I've had carp to 31lbs (although I have seen a 34 come out although it is claimed there are bigger)
Tench to 11lb, roach to 3lb, and bream to 11lbs. It is a crazy little place. Very relaxing, beautiful and fun. Depths to 9ft. And apparently theres a VERY VERY big eel lurking in the depths. If you are on the A43 between Northampton and Kettering take the turning towards Walgrave and the lake is on the left about a mile down. Best baits at the mo are meat, nutty boilies, corn and of course maggots.
If you are going to gound bait down hemp pellets seem to bring them on. Fiver a day or Tenner for 24 hours.