WSP08741

• File Number: 8170
• Description: Arkansas Basin Water Quality Issues
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 1/1/1993
• Author: USGS
• Title: Reconnaissance of Water Quality of Lake Henry and Lake Meredith Reservior - Crowley County - Southeastern Colorado - April-October 1987
• Water Supply Pro - Doc Type: Report/Study

0046

CONTENTS

Abstract .................................. ........................................... ................................................................................................. ]
In troduct ion ............................ ............",..... ........................ ............................ .............................."..... .............. n......... ........ 2
Purpose and scope ....... ............... ................................... ................... ................. ....................... ........... .......... .... 2
Descriplian of Lake Henry and Lake Meredilh ........................................................................................................ 2
Methods of investigation .... ............."..................._................ ...................... ................. .................... ............. ......... no 4
Si gni ficance of w atcr-qual ity variables n..... .............."...................... ....... n... ..... ................ ...... .... ............ ....................... ....... 8

Onsi te nleasure ments ............... ...................... ................................................................ ........................ .................... 8
Chemical constituents ........................................................................ ............ .............................................. .............. 9
Biologic al consli tuents ............ ........................................................................................ ....................... ............ ....... 9
Troph ic sial us................................................................................................ ... .............. ....................... ..................... 9
Walcr-qu,lily ehar,cterislics of Lake Henry and campurisan 10 water-quality standurds.................................................... 10

Ons i te nleasure ments............. ....... ................................................................. ..... ........... ....................... ................ ..... 10
Chemical cansliluents............... .................... ................................. ..... ............................................... .................... .... 1 S
Biological constituents........ ................... ................................................................ .......... ...................... ............ ....... 17
Trophic stalus........................... ..... ................................................................ ................. ....................... ..................... 19
Watcr.qu:liity characteristics of Lake Meredith and comparison to waler.quality standards ............................................... 20

Ons i Ie measurements........................................................................................................ ...................... ............ ....... 20
Chemical consti luents.................................................................... ............ ................. ...............,....... ............ ............ 25
Biological constituents........... ....... ........... ...... ................................. .................................. ............ ...................... ...... 27
Trophic status...................... ................. ................................................................................................. .................. ... 27
Comparison of selected waler-qualily characteristics between Lake Henry and Luke Meredith ......................................... 29

Summary......................................................................................................................... ............. ..................... .............. ...... 29
Selected references....................... ................ ................................... .................. ........................................................ ............ 31
Su pplenlclltn I do. t3 .......................... ..................................,................... ............................. ................................. .............. .... 33

FIGURES

1-3. Maps showing:
I. Locution of the study urea........... ............................................................................................................ 3
2. Bathymetry and sampling sites al Lake Henry ....................................................................................... S
3. B,"hymelry and sampling sites at Lake Meredilh................................................................................... 6
4-11. Graphs showing:
4. Profiles of woter temperuture al depth for sites HEW2. HNW, and HSE at Lake Henry ....................... II
5. Profiles of dissolved oxygen and pH at depth for sites HEW2, HNW, and HSE at Lake Henry............ 12
6. Profiles of specific conductance at depth for sites HEW2, HNW, and HSE at Lake Henry................... 13
7. Densilies and taxonomic composition of major phytoplankton groups collected from
site HEW2 at Lake Henry on May I, June 29, August 19, and Oclaber 6, 1987................................ 18
8. Profiles of waler temperulure at depth for siles M2B. MIB, and M4B at Lake Meredith...................... 21
9. Profiles of dissolved oxygen and pH at depth for sites M2B, MIB, and M4B at Lake Meredith.......... 22
10. Profiles of specific conductance at depth for sites M2B, MIB, and M4B at Lake Meredith ................. 24
II. Densities and taxonomic campasilian of major phytoplankton groups callecled
from site M2B at Lake Meredith on May I, June 30, August 20, and October 6,1987..................... 28

TABLES

1. Conlents of Lake Henry and Luke Meredilh for each sampling dale.................................................................... 4
2. Sampling-sile lacalians and sampling dales at Lake Henry and Lake Meredith Reservair.................................. 7
3. Onsile measuremenls at the Lake Henry inlet (HI) and the Sugar City laterul (HO)............................................ 14
4. Light-tcunsparency measurements for all sites at Lake Henry .............................................................................. IS

CONTENTS III