DEVELOPMENT OF A TIME-OF-TRAVEL COMPUTER PROGRAM FOR BAYOU LAFOURCHE
Center for Inland Water Studies, University of Southwestern Louisiana, Lafayette, Louisiana
Michael G. Waldon Max T. Hebel
Paul A. Richards Madeline Rogers Duane Everett Fred Lee
TRACER DYE STUDIES AND THE USE OF RHODAMINE WT FLUORESCENT DYE
●
Water soluble
●
Highly Detectable
●
Strongly Fluorescent
● Fluoresenct characteristic not noramally found in natural waterways ●
Harmless at low concentrations
●
Inexpensive
●
Reasonably stable in normal water environment
●
Easy to work with and store
MAJOR LANDMARKS ALONG BAYOU LAFOURCHE RIVERMILE
DESCRIPTION
0.59
Tenth St. (Donaldsonville)
10.0
Hwy. 70
10.65
Hwy. 402
33.78
Jackson St. (Thibodaux)
51.04
Hwy. 90
56.24
Drawbridge (at Lockport)
67.70
Intracoastal Waterway
86.50
Storm Surge Structure below Golden Meadow
FRESH WATER INTAKES
RIVERMILE
DESCRIPTION
16.19
Assumption Parish Water Works intake
16.85
Napoleonville Water Works intake
33.95
Intake at Thibodaux
39.90
Shreiver Intake
54.72
Lafourche Parish Water Works #2
56.40
Lockport (intakes)
TRACER DYE STUDY METHODOLOGY ●
Dye injection • • •
●
Sampling • • •
●
Discharge Measurments Dye characteristics Injection techniques
Unattended sampling - ISCO Wastewater Sampler Hand sampling Site selection
Dye concentration measurement • • •
Temperature Field data Standards
BAYOU LAFOURCE DYE STUDIES ●
At a mininum 2 dye studies are needed at 2 different dischargers
●
Studies were conducted in June 1991 and May 1994
●
In each of these studies dye was injected at 6 Sites
●
Dye was observed passing 6 downstream sites
●
ISCO wastewater samplers were utilized at the downstream sites for sample collection
● Samples were evaluated using Turner Designs Model 10 fluorometers
USL-CLIWS Bayou Lafourche TIME-OF-TRAVEL PROGRAM - VERSION L4.0 ON - IBM-PC computer WRITTEN BY - Michael G. Waldon, Ph.D., P.E. Center for Louisiana Inland Water Studies University of Southwestern Louisiana P.O. Box 42291 Lafayette, La 70504 (318)231-6048 email:
[email protected]
Please press any key to begin • EXPORT FILE - provides time of travel for printing or plotting just press the enter key at the next prompt to accept default name ENTER NAME OF EXPORT FILE (TOFT.TXT) ? • PLEASE WAIT - INITIALIZING VARIABLES .A-B DONALDSONVILLE TO NAPOLEANVILLE .B-C NAPOLEANVILLE TO ST JOHN CHURCH BRIDGE .C-D ST JOHN CHURCH BRIDGE TO THIBODAUX AT CANAL BLVD HWY 308 .D-E THIBODAUX AT CANAL BLVD HWY 308 TO ST CHARLES BRIDGE .E-F ST CHARLES BRIDGE TO RACELAND HWY 308 .F-G RACELAND HWY 308 TO CLOTILDA HWY 308 .G-H CLOTILDA HWY 308 TO LOCKPORT AT VACHERIE ST .H-I LOCKPORT AT VACHERIE ST TO VALENTINE PONTOON . ******** PRESS ANY KEY TO CONTINUE > •
1 STARTING RIVERMILE 2 ENDING RIVERMILE 3 RIVER DISCHARGE (CFS) 4 AMOUNT IN SPILL (LBS)
0 0 0 0
Bayou Lafourche -- ENTER ZERO TO RUN WITH CURRENT VALUES ENTER 5 TO GET HELP WITH DISCHARGE ESTIMATION OR ENTER NUMBER OF PARAMETER (1-4): ? 1 • ENTER VALUE FOR 1 STARTING RIVERMILE ? 10 • 1 STARTING RIVERMILE 2 ENDING RIVERMILE 3 RIVER DISCHARGE (CFS) 4 AMOUNT IN SPILL (LBS)
10 0 0 0
Bayou Lafourche -- ENTER ZERO TO RUN WITH CURRENT VALUES ENTER 5 TO GET HELP WITH DISCHARGE ESTIMATION OR ENTER NUMBER OF PARAMETER (1-4): ? 2 • ENTER VALUE FOR 2 ENDING RIVERMILE ? 20 • 1 STARTING RIVERMILE 2 ENDING RIVERMILE 3 RIVER DISCHARGE (CFS) 4 AMOUNT IN SPILL (LBS)
10 20 0 0
Bayou Lafourche -- ENTER ZERO TO RUN WITH CURRENT VALUES ENTER 5 TO GET HELP WITH DISCHARGE ESTIMATION OR ENTER NUMBER OF PARAMETER (1-4): ? 3 • ENTER VALUE FOR 3 RIVER DISCHARGE (CFS) ? 200 • 1 STARTING RIVERMILE 2 ENDING RIVERMILE 3 RIVER DISCHARGE (CFS) 4 AMOUNT IN SPILL (LBS)
10 20 200 0
Bayou Lafourche -- ENTER ZERO TO RUN WITH CURRENT VALUES ENTER 5 TO GET HELP WITH DISCHARGE ESTIMATION OR ENTER NUMBER OF PARAMETER (1-4): ? 4 • ENTER VALUE FOR 4 AMOUNT IN SPILL (LBS) ? 20 •
1 STARTING RIVERMILE 2 ENDING RIVERMILE 3 RIVER DISCHARGE (CFS) 4 AMOUNT IN SPILL (LBS)
10 20 200 20
Bayou Lafourche -- ENTER ZERO TO RUN WITH CURRENT VALUES ENTER 5 TO GET HELP WITH DISCHARGE ESTIMATION OR ENTER NUMBER OF PARAMETER (1-4): ? 0 •
USER ADVISE ----------INPUT PARAMETERS WITHIN CALIBRATION RANGE ======================================================= STARTING MILE ENDING MILE RIVER DISCHARGE AMOUNT SPILLED
10.00 20.00 200 CFS 20 POUNDS
TIME-OF-TRAVEL (HOURS) LEADING EDGE 21.40 PEAK 24.50 TRAILING EDGE 33.81 DURATION PEAK CONCENTRATION
AVERAGE VELOCITY (MILES/HR) 0.47 0.41 0.30
(FEET/SEC) 0.69 0.60 0.43
12.41 HOURS 70.5412 PPB AT ENDING RIVER MILE
DO YOU WISH TO RUN AGAIN, ENTER Y OR N [Y]? n •
Vector Diagram Bayou Lafourche - Donaldsonville to Valentine Dye Study Reach • • RM 0.71 -••••••••••••• SITE 1: Donaldsonville near culvert on HWY 308 • • • • B • A • RM 16.85 ••••• Y••••••• SITE 3: Napoleonville (Assumption Parish O • Water Works) U • • RM 29.45 ••••• L••••••• SITE 4: St. John’s bridge on HWY 308 A • F • O • RM 34.05 ••••• U••••••• SITE 5: Thibodaux at Canal Blvd. On HWY 308 R • C • H • RM 41.00 ••••• E••••••• SITE 6: St. Charles’ bridge on HWY 308 • • • • • • RM 54.75 •••••••••••••• SITE 8: Clotilda (Lafourche Parish • Water Works) • • RM 56.30 •••••••••••••• SITE 9: Lockport Bridge • • RM 62.40 •••••••••••••• SITE 10: Valentine Bridge • • •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• GULF OF MEXICO
