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yeah we are probably going to pump it at a lower flow rate but the aquifer is sand not sandstone.

I just talked to the water operator and the well has been inopperative for the last 2 months. They started it up yesterday at 700 gpm and the first turbidity reading was 6. They checked it again this morning and the turbidity was 10. Why would this happen when for last month of pumping we had...

Our specs said something to the effect that the well shall have a turbidity less than 5 but didn't say anything about the sand production. thanks

yes they installed a slotted Muni-Pak screen in the aquifer and placed a gravel pack outside of the screen between the aquifer. Yes I thought about running a camera down to the bottom of the hole just to check and make sure that the screen is installed where it is supposed to be. My thought...

The thought was that maybe there was some drilling mud that wasn't pulled out and rise and fall of the water in the well would help to pull any mud out that might have been in there. It was really a shot in the dark because why would a well pump well for a time and then get turbid. They did...

bimr The well was pumping 1100 gpm and we reduced the pumping rate to 800 gpm and the turbidity did not change noticably. As far as influence from surface water recharge I guess that it does get recharged from surface water but I don't know where. No other wells that are screened in the...

bimr The well is 700 feet deep in a sand aquifer that has clay above and below it. It is a 1000 gpm well 1. The well was properly disinfected before use. Bacteriological tests were performed to ensure there was no problem 2. I have done a complete water analysis. I attached it. 3. There...

I have a water well that was recently drilled. The initial tests indicate that the water had a turbidity of 7. The well pumped several million gallons into the distribution system and the utility started getting complaints that the water was cloudy. We checked the turbidity agian and it was...

I have a 5 acre watershed, 7 minute time of concentration, 8.5 inch per hour storm intensity, and .5% slope for my pipe. The flow out of the watershed into the pipe indicates that I need a 36 inch diameter pipe. I feel I have followed standard design procedures but a rainfall of 8.5 inches...

Using Hydraflow what is the best way to size a detention basin?

I am new to Hydraflow and I wanted to check everything that I have been working on. Hydraflow is giving me a time to peak discharge of around 13 hours, but by hand calculations I get a time to peak discharge of 1.5 hours. My time of concentration is 78 minutes-maybe I am wrong here but I...

I am attempting to model a riser pipe in Hec-Hms. I know that at the beginning stages of the pipe flowing, it functions like a weir, with the circumferece of the pipe equal to the length of the weir, but as the water level increases the riser pipe begins to flow full and it is modeled like an...