I have 2 guesses. 1 is that I might be a bridge that ran over a spring time wet area along the lake or 2 a ferry crossing. 1 for ferry's coming and 1 for ferry's going. Lakes and ponds grow and shrink annually, if there isn't a manmade dam in place. In 100 years a pond can become a swamp, with a few beavers a swamp can become a small lake. Not sure if this helps ya any but it gives you a few more possibilities. Is there any road running along the lake or in between the two piers into the lake or no road at all? Swiz
well I'm sure its not a ferry, its a very small lake with lots of islands.....in the summer it gets really dried up and you can drive across it if you want. (I see the tire tracks) There is a dirt road that was really tiny that i made huge by going every day (probably was a road back in the day and grew over) behind the concrete things....you know what this is to hard to explain.....I just got told to stay home today because i was late again. (probably getting fired soon) so I'm going to get more pictures!!!
I think they may be extraterrestrial []! A landing pad for the Mother-Ship! I have been in contact with the Galactic counsel...lol
Actually, you said that these were at a, "runoff lake near a river". I'm guessing Flood or irrigation cotrol Gates. They certainly look do like bridge supports...[sm=rolleyes.gif]