Jefferson Is. Water History

[This was sent from a reliable source]

There was a GROUND WATER RESOURCES COMMISSION MEETING Sept. 16, 2009 – held at Eunice, Louisiana.

Pg 101 very interesting
And I will say at this point that, in the
15 Jefferson Island and the Delcambre area, there are
16 five known wells that have already gone dry in the
17 last five years, so this is a problem that is
18 occurring. Many of the wells are having to be
19 deepened or redrilled because the water level has
20 dropped and the aquifer has dropped below the intake
21 table — the intake of these wells, and these wells
22 are running dry.
23 This is the farming area that shows the rice
24 irrigation areas in south Louisiana, and the drawdown
25 curves of these wells that are listed in the Crowley
26 — in the Acadia Parish area. I think it shows like a
27 -60 elevation, and it is dropping 60′ from mean sea
28 level of zero. So you have about a 60′ drop in the
29 water table from the edge of the Gulf of Mexico, down
30 to — up — or down to the middle of where it has
GROUND WATER RESOURCES COMMISSION MEETING
SEPTEMBER 16, 2009
Michelle S. Abadie, CCR
102
1 formed this crater, and so, from here to up here is
2 about 60 to 65 miles, and there is a 60′ drawdown
3 right there. And I will illustrate what is happening.
4 These are some of the water levels, and it shows
5 how fast — how quickly the sand — the aquifer levels
6 will change. These were taken in the fall of ’95, and
7 this is in the spring of ’96. This is the same zone,
8 and you see the changes in the contour lines of the —
9 these are metric lines of the drawdown curves in this
10 particular area. This is in the Lake Charles area.
11 You’ll notice how fast it can change from fall to
12 spring. This is fall of ’95, okay.
13 Now, the impact of subsidence of water
14 withdrawal, this is a slide that was obtained from a
15 meeting that we attended. As oil-land surveyors, we
16 were called — and engineers, you recall at the
17 meeting in Baton Rouge, right — that would have been
18 in November or December, after Hurricane Rita. And
19 the U.S. Geological Survey and the Center for
20 Geoinformatics at LSU had been conducting some
21 elevation of the benchmarks, and they compared the
22 benchmark to elevations that they were getting by GPS
23 signals benchmarks, comparing those to what they were
24 finding on present day. And this is the results of
25 their findings, and it shows the amounts of subsidence
26 that had actually occurred in certain areas.
27 Now, you notice in one area, where you see the
28 Crowley area, there’s a big -3 that shows right there
29 in front — in the magenta or pink, that’s -3′ of
30 subsidence of the ground over — since these test

This is from the GROUND WATER RESOURCES COMMISSION MEETING OF September, 2009.       About Lake Peigneur

Here the Ground Water Resources Commission is talking about wells going dry in the Jefferson Island and the Delcambre area.

http://dnr.louisiana.gov/assets/docs/conservation/documents/transcript91609.pdf

Here is the AGL Resources Operating agreement:

3.4. Water Rights; Chicot Aquifer Withdrawal Restriction. Further without limiting the foregoing, and subject to obtaining any approvals required under Applicable Law, Jefferson Island shall have the right to drill for and extract water as may be necessary, incidental, or desirable for the Permitted Purposes, including, without limitation,

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10 thoughts on “Jefferson Is. Water History

  1. To clarify:

    Pg 101 and 2, very interesting
    And I will say at this point that, in the
    Jefferson Island and the Delcambre area, there are five known wells that have already gone dry in the last five years, so this is a problem that is occurring. Many of the wells are having to be deepened or redrilled because the water level has dropped and the aquifer has dropped below the intake table — the intake of these wells, and these wells are running dry. This is the farming area that shows the rice irrigation areas in south Louisiana, and the drawdown curves of these wells that are listed in the Crowley— in the Acadia Parish area. I think it shows like a -60 elevation, and it is dropping 60′ from mean sea level of zero. So you have about a 60′ drop in the water table from the edge of the Gulf of Mexico, down 30 to — up — or down to the middle of where it has
    formed this crater, and so, from here to up here is about 60 to 65 miles, and there is a 60′ drawdown right there. And I will illustrate what is happening. These are some of the water levels, and it shows how fast — how quickly the sand — the aquifer levels will change. These were taken in the fall of ’95, and this is in the spring of ’96. This is the same zone, and you see the changes in the contour lines of the – these are metric lines of the drawdown curves in this particular area. This is in the Lake Charles area. You’ll notice how fast it can change from fall to spring. This is fall of ’95, okay. Now, the impact of subsidence of water withdrawal, this is a slide that was obtained from a meeting that we attended. As oil-land surveyors, we were called — and engineers, you recall at the meeting in Baton Rouge, right — that would have been in November or December, after Hurricane Rita. And the U.S. Geological Survey and the Center for Geoinformatics at LSU had been conducting some elevation of the benchmarks, and they compared the benchmark to elevations that they were getting by GPS signals benchmarks, comparing those to what they were finding on present day. And this is the results of their findings, and it shows the amounts of subsidence that had actually occurred in certain areas. Now, you notice in one area, where you see the Crowley area, there’s a big -3 that shows right there in front — in the magenta or pink, that’s -3′ of subsidence of the ground over — since these tests.

    GROUND WATER RESOURCES COMMISSION MEETING
    SEPTEMBER 16, 2009
    Michelle S. Abadie, CCR
    (225) 261-5109
    102

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