In a large saucepan, bring water, wild rice, butter and 1/2 teaspoon salt to a boil.
Lower heat; cover and simmer for 40 minutes.
Stir in brown rice.
Cover and let simmer for 20-25 minutes longer or until rice is tender.
Using a skillet, cook bacon until crisp.
Move bacon to paper towels; drain skillet reserving 2 tablespoons drippings.
In the drippings, saute mushrooms, onion, peppers and celery until tender.
Mix in broth and remaining salt.
Bring to a boil.
Combine the cornstarch and cold water until smooth; stir into the mushroom mixture.
Cook and stir for 2 minutes or until thickened and bubbly; stir in almonds and bacon.
Drain rice; add mushroom mixture.
Transfer to a greased 13x9x2-inch baking pan.
Cover and bake at 350 for 25 minutes.
Uncover, bake 5-10 more minutes or until heated through.