# Storm nutrient dynamics at Andrews Experimental Forest stream gages, 2001 to 2003 ## Dataset - **Database Code:** CF006 - **Title:** Storm nutrient dynamics at Andrews Experimental Forest stream gages, 2001 to 2003 - **Abstract:** This study examines headwater stream nutrients at stream gaging sites during selected storms in the Andrews Experimental Forest. High frequency storm sampling was conducted to examine flow path dynamics, basin characteristics, seasonal trends, and differing responses and mobility among analytes on streamwater nutrient concentrations and fluxes. - **Keywords:** water chemistry; storms; inorganic nutrients; carbon; nitrogen; phosphorus; inorganic nutrients - **Temporal coverage:** 2001-05-14 to 2003-11-22 - **Principal Investigator:** Sherri L. Johnson ## Data Entities 1. CF00601 ## Entity 1: CF00601 ### Attribute list - **DBCODE** — varchar, enum Database Code - **CF006** — FSDB Database Code CF006 - **ENTITY** — numeric(1), range 1.0000 1.0000, number Entity number - **SITECODE** — varchar, enum Watershed sampled - **GSWS01** — Andrews Watershed 1 Gaging Station - **GSWS02** — Andrews Watershed 2 Gaging Station - **GSWS09** — Andrews Watershed 9 Gaging Station - **GSWS10** — Andrews Watershed 10 Gaging Station - **WS10S1** — Watershed 10 hillslope throughflow weir (McGuire study) - **DATE_TIME** — datetime, freetext Date and time of sample - **PO4P** — numeric(1), range 0.0000 0.4790, milligrams per liter Ortho phosphorus concentration, soluble reactive phosphorus, phosphate (PO4-P); method: ascorbic acid finish - **PO4PCODE** — varchar, enum Phosphate (PO4-P) concentration value qualifier code - ** ** — Value is good - **N** — No analysis conducted - **TDP** — numeric(1), range 0.0000 0.5100, milligrams per liter Total dissolved phosphorus concentration; method: persulfate/H2SO4 digestion, ascorbic acid finish - **TDPCODE** — varchar, enum Total dissolved phosphorus concentration value qualifier code - ** ** — Value is good - **N** — No analysis conducted - **TDN** — numeric(1), range 0.0000 0.2500, milligrams per liter Total dissolved nitrogen concentraton (filtered sample); method: persulfate digestion and analysis by automated colorimetric analysis; instrument: Technicon Auto-Analyzer II - **TDNCODE** — varchar, enum Total dissolved nitrogen concentration value qualifier code - ** ** — Value is good - **N** — No analysis conducted - ***** — Value is below detection limit for analysis - **NO3N** — numeric(1), range 0.0000 0.3070, milligrams per liter Nitrate-nitrogen (NO3-N), nitrate + nitrite as nitrogen concentration; method: automated cadmium reduction - **NO3NCODE** — varchar, enum Nitrate-nitrogen (NO3-N) concentration value qualifier code - ** ** — Value is good - **N** — No analysis conducted - ***** — Value is below detection limit for analysis - **NH3N** — numeric(1), range 0.0000 0.0590, milligrams per liter Ammonia-nitrogen (NH3-N) concentration, ammonia as nitrogen; method: automated phenate - **NH3NCODE** — varchar, enum Ammonia-nitrogen (NH3-N) concentration value qualifier code - ** ** — Value is good - **N** — No analysis conducted - ***** — Value is below detection limit for analysis - **DON** — numeric(1), range 0.0000 0.1400, milligrams per liter Dissolved organic nitrogen - not measured analytically; mathematically determined by subtracting NH3-N and NO3-N from Total dissolved nitrogen - **DONCODE** — varchar, enum Dissolved organic nitrogen concentration value qualifier code - ** ** — Value is good - **N** — No analysis conducted - **DOC** — numeric(1), range 0.0000 8.5000, milligrams per liter Dissolved organic carbon concentration; method: combustion - **DOCCODE** — varchar, enum Dissolved organic carbon concentration value qualifier code - ** ** — Value is good - **N** — No analysis conducted - **DISCHARGE_CFS** — numeric(1), range 0.0010 3.9910, cubic feet per second Discharge measured in cfs - **DISCHARGE_LPS** — numeric(1), range 0.0000 113.0132, liters per second CFS discharge converted to l/s ## Attribute Definitions **DATE_TIME** Date and time of sample **DBCODE** Database Code **DISCHARGE_CFS** Discharge measured in cfs **DISCHARGE_LPS** CFS discharge converted to l/s **DOC** Dissolved organic carbon concentration; method: combustion **DOCCODE** Dissolved organic carbon concentration value qualifier code **DON** Dissolved organic nitrogen - not measured analytically; mathematically determined by subtracting NH3-N and NO3-N from Total dissolved nitrogen **DONCODE** Dissolved organic nitrogen concentration value qualifier code **ENTITY** Entity number **NH3N** Ammonia-nitrogen (NH3-N) concentration, ammonia as nitrogen; method: automated phenate **NH3NCODE** Ammonia-nitrogen (NH3-N) concentration value qualifier code **NO3N** Nitrate-nitrogen (NO3-N), nitrate + nitrite as nitrogen concentration; method: automated cadmium reduction **NO3NCODE** Nitrate-nitrogen (NO3-N) concentration value qualifier code **PO4P** Ortho phosphorus concentration, soluble reactive phosphorus, phosphate (PO4-P); method: ascorbic acid finish **PO4PCODE** Phosphate (PO4-P) concentration value qualifier code **SITECODE** Watershed sampled **TDN** Total dissolved nitrogen concentraton (filtered sample); method: persulfate digestion and analysis by automated colorimetric analysis; instrument: Technicon Auto-Analyzer II **TDNCODE** Total dissolved nitrogen concentration value qualifier code **TDP** Total dissolved phosphorus concentration; method: persulfate/H2SO4 digestion, ascorbic acid finish **TDPCODE** Total dissolved phosphorus concentration value qualifier code ## Enumerated Domains ### DBCODE - **CF006** — FSDB Database Code CF006 ### SITECODE - **GSWS01** — Andrews Watershed 1 Gaging Station - **GSWS02** — Andrews Watershed 2 Gaging Station - **GSWS09** — Andrews Watershed 9 Gaging Station - **GSWS10** — Andrews Watershed 10 Gaging Station - **WS10S1** — Watershed 10 hillslope throughflow weir (McGuire study) ### PO4PCODE - ** ** — Value is good - **N** — No analysis conducted ### TDPCODE - ** ** — Value is good - **N** — No analysis conducted ### TDNCODE - ** ** — Value is good - **N** — No analysis conducted - ***** — Value is below detection limit for analysis ### NO3NCODE - ** ** — Value is good - **N** — No analysis conducted - ***** — Value is below detection limit for analysis ### NH3NCODE - ** ** — Value is good - **N** — No analysis conducted - ***** — Value is below detection limit for analysis ### DONCODE - ** ** — Value is good - **N** — No analysis conducted ### DOCCODE - ** ** — Value is good - **N** — No analysis conducted