floating water across lot

Hello, I added a house to a 64x64 lot. it is perfect other than the floating water or green stuff floating. I cannot remove it in build mode, and my sims cannot walk through it. unless it is on the same level. It makes my workout room look ghastly. I've done a search on this, and they suggested moving the lot to a new lot. The house was placed backwards on the first lot, and the green stuff was in the front. I moved the house to a new lot, and the house is placed properly, but now the green stuff is in the back. If I delete and level the house and lot, only the green stuff stays. If I rotate the lot, it goes away, but when I lay the house again, it comes back. I can't rotate the house on the lot, for it takes up the whole lot. I am sure it can be removed someway but i just cant figure it out. Here are a couple pics of the problem.  https://gyazo.com/b6fc2cfd309001f50d9605ec786e3a5a