#
# File created on 2024-06-02 12:04:11 EDT
#
# U.S. Geological Survey
# 
# This file contains selected water-quality data for stations in the National Water 
# Information System water-quality database.  Explanation of codes found in this file are 
# followed by the retrieved data. 
#
# The data you have secured from the USGS NWISWeb database may include data that have 
# not received Director's approval and as such are provisional and subject to revision. 
# The data are released on the condition that neither the USGS nor the United States 
# Government may be held liable for any damages resulting from its authorized or 
# unauthorized use.
#
# To view additional data-quality attributes, output the results using these options:  
# one result per row, expanded attributes.  Additional precautions are at:
# https://help.waterdata.usgs.gov/tutorials/water-quality-data/help-using-the-water-quality-data-retrieval-system#Data_retrievals_precautions
#
#  agency_cd                  - Agency Code
#  site_no                    - USGS site number
#  sample_dt                  - Begin date
#  sample_tm                  - Begin time
#  sample_end_dt              - End date
#  sample_end_tm              - End time
#  sample_start_time_datum_cd - Time datum
#  tm_datum_rlbty_cd          - Time datum reliability code
#  coll_ent_cd                - Agency Collecting Sample Code
#  medium_cd                  - Sample Medium Code
#  tu_id                      - Taxonomic unit code
#  body_part_id               - Body part code
#  parm_cd                    - Parameter code
#  remark_cd                  - Remark code
#  result_va                  - Parameter value
#  val_qual_tx                - Result value qualifier code
#  meth_cd                    - Method code
#  dqi_cd                     - Data-quality indicator code
#  rpt_lev_va                 - Reporting level
#  rpt_lev_cd                 - Reporting level type
#  lab_std_va                 - Lab standard deviation
#  anl_ent_cd                 - Analyzing entity code
#
# The following parameters are included:
#  00572  - Biomass, periphyton, ash weight, grams per square meter
#  00573  - Biomass, periphyton, dry weight, grams per square meter
#  49954  - Biomass, periphyton, ash free dry mass, grams per square meter
#  62359  - Pheophytin a, periphyton, milligrams per square meter
#  70950  - Biomass to chlorophyll ratio, periphyton, number
#  70957  - Chlorophyll a, periphyton, chromatographic-fluorometric method, milligrams per square meter
#  70958  - Chlorophyll b, periphyton, chromatographic-fluorometric method, milligrams per square meter
#
# Description of sample_start_time_datum_cd:
# EDT  - Eastern Daylight Time
#
# Description of tm_datum_rlbty_cd:
# K  - Known
# T  - Transferred
#
# Description of coll_ent_cd and anl_ent_cd:
# USGS-WRD  - U.S. Geological Survey-Water Resources Discipline
# USGSNWQL  - USGS-National Water Quality Lab, Denver, CO
#
# Description of medium_cd:
# BP  - Plant tissue
#
# Description of tu_id:
# https://www.itis.gov/
#
# Description of body_part_id:
# 94  - Tissue/Body Part, unspecified
#
# Description of remark_cd:
#
# Description of val_qual_tx:
# c  - see result laboratory comment
# d  - sample was diluted
#
# Description of meth_cd:
# 00050  - Plant pigments, sonication & 445
# ALGOR  - Computation by NWIS algorithm
# GRV15  - Biomass, periphyton (NWQL)
# LC026  - Chlorophyll, periphyton, by HPLC
# LC048  - Chlorophyll b, periphyton, HPLC
#
# Description of dqi_cd:
# A  - Historical data
# R  - Reviewed and approved
# S  - Provisional
#
# Description of rpt_lev_cd:
# MRL  - Minimum reporting level
#
# Data for the following sites are included:
#  USGS 01654000 ACCOTINK CREEK NEAR ANNANDALE, VA
#
agency_cd	site_no	sample_dt	sample_tm	sample_end_dt	sample_end_tm	sample_start_time_datum_cd	tm_datum_rlbty_cd	coll_ent_cd	medium_cd	tu_id	body_part_id	parm_cd	remark_cd	result_va	val_qual_tx	meth_cd	dqi_cd	rpt_lev_va	rpt_lev_cd	lab_std_va	anl_ent_cd
5s	15s	10d	5d	10d	5d	3s	1s	8s	3s	11s	11s	5s	1s	12s	5s	5s	1s	12s	6s	11s	8s
USGS	01654000	1993-08-11	10:00			EDT	T	USGS-WRD	BP	0	94	70957		11.0		LC026	A				
USGS	01654000	1993-08-11	10:00			EDT	T	USGS-WRD	BP	0	94	70958		1.4		LC048	A				
USGS	01654000	1993-08-11	13:22			EDT	T	USGS-WRD	BP	0	94	00572		105.0		GRV15	A				
USGS	01654000	1993-08-11	13:22			EDT	T	USGS-WRD	BP	0	94	00573		110.0		GRV15	A				
USGS	01654000	1993-08-11	13:22			EDT	T	USGS-WRD	BP	0	94	49954		5.00		ALGOR	A				
USGS	01654000	1994-06-07	11:29			EDT	T	USGS-WRD	BP	0	94	00572		60.0		GRV15	A				
USGS	01654000	1994-06-07	11:29			EDT	T	USGS-WRD	BP	0	94	00573		67.0		GRV15	A				
USGS	01654000	1994-06-07	11:29			EDT	T	USGS-WRD	BP	0	94	49954		7.00		ALGOR	A				
USGS	01654000	1994-06-07	11:29			EDT	T	USGS-WRD	BP	0	94	70950		1040		ALGOR	A				
USGS	01654000	1994-06-07	11:29			EDT	T	USGS-WRD	BP	0	94	70957		6.7		LC026	A				
USGS	01654000	1994-06-07	11:29			EDT	T	USGS-WRD	BP	0	94	70958		2.4		LC048	A				
USGS	01654000	1994-06-08	10:05			EDT	T	USGS-WRD	BP	0	94	00572		70.0		GRV15	A				
USGS	01654000	1994-06-08	10:05			EDT	T	USGS-WRD	BP	0	94	00573		79.0		GRV15	A				
USGS	01654000	1994-06-08	10:05			EDT	T	USGS-WRD	BP	0	94	49954		9.00		ALGOR	A				
USGS	01654000	1994-06-08	10:05			EDT	T	USGS-WRD	BP	0	94	70950		1300		ALGOR	A				
USGS	01654000	1994-06-08	10:05			EDT	T	USGS-WRD	BP	0	94	70957		6.9		LC026	A				
USGS	01654000	1994-06-08	10:05			EDT	T	USGS-WRD	BP	0	94	70958		2.6		LC048	A				
USGS	01654000	1994-06-09	10:29			EDT	T	USGS-WRD	BP	0	94	00572		54.0		GRV15	A				
USGS	01654000	1994-06-09	10:29			EDT	T	USGS-WRD	BP	0	94	00573		57.0		GRV15	A				
USGS	01654000	1994-06-09	10:29			EDT	T	USGS-WRD	BP	0	94	49954		3.00		ALGOR	A				
USGS	01654000	1994-06-09	10:29			EDT	T	USGS-WRD	BP	0	94	70950		1150		ALGOR	A				
USGS	01654000	1994-06-09	10:29			EDT	T	USGS-WRD	BP	0	94	70957		2.6		LC026	A				
USGS	01654000	1994-06-09	10:29			EDT	T	USGS-WRD	BP	0	94	70958		1.3		LC048	A				
USGS	01654000	2014-06-10	10:30			EDT	K	USGS-WRD	BP	0	94	00572		63.5		GRV15	S	0.1	MRL		USGSNWQL
USGS	01654000	2014-06-10	10:30			EDT	K	USGS-WRD	BP	0	94	00573		66.2		GRV15	S	0.1	MRL		USGSNWQL
USGS	01654000	2014-06-10	10:30			EDT	K	USGS-WRD	BP	0	94	49954		2.7		GRV15	S	0.1	MRL		USGSNWQL
USGS	01654000	2014-06-10	10:30			EDT	K	USGS-WRD	BP	0	94	62359		12.2	dc	00050	R	0.1	MRL		USGSNWQL
USGS	01654000	2014-06-10	10:30			EDT	K	USGS-WRD	BP	0	94	70950		96.9		ALGOR	S				
USGS	01654000	2014-06-10	10:30			EDT	K	USGS-WRD	BP	0	94	70957		27.9	dc	00050	R	0.1	MRL		USGSNWQL