| C | Collector or Ranney type well |
| D | Drain dug to intercept the water table or potentiometric surface to either lower the ground-water level or serve as a water supply |
| E | Excavation |
| H | Sinkhole |
| I | Interconnected wells, also called connector or drainage wells; that is, a well interconnected via an underground lateral |
| M | Multiple wells. Use only for well field consisting of a group of wells that are pumped through a single header and for which little or no data about the individual wells are available |
| O | Outcrop |
| P | Pond dug to intercept the water table or potentiometric surface and serve as a water supply |
| S | Spring (used only on spring schedule |
| T | Tunnel, shaft, or mine from which ground water is obtained |
| W | Well, for single wells other than wells of the collector or Ranney type |
| X | Test hole, not completed as a well |
| C | Data have been field checked by the reporting agency |
| L | Location not accurate |
| M | Minimal data |
| U | Data have not been field checked by the reporting agency, but the reporting agency considers the data reliable |
| 8 | Colorado |
| 20 | Kansas |
| 29 | Missouri |
| 31 | Nebraska |
| 40 | Oklahoma |
| S | The measurement is accurate to + 1 second |
| F | The measurement is accurate to + 5 seconds |
| T | The measurement is accurate to + 10 seconds |
| M | The measurement is accurate to + 1 minute |
| GIS | Well plotted using a Geographic Information System |
| GPS | Global positioning system |
| GPS (within 50 feet) | Global positioning system within 50 feet of site |
| GWSI | Original values from USGS Ground Water Site Inventory |
| LEO | Calculated from KGS LEO plss description to lat/long conversion program |
| A | Altimeter |
| D | Digital Elevation Model |
| L | Level or other surveying method |
| M | Interpolated from topographic map |
| A | Anode |
| C | Standby emergency supply |
| D | Drain |
| E | Geothermal |
| G | Seismic |
| H | Heat reservoir |
| M | Mine |
| O | Observation |
| P | Oil or gas well |
| R | Recharge |
| S | Repressurize |
| T | Test |
| U | Unused |
| W | Withdrawal of water |
| X | Waste disposal |
| Z | Destroyed |
| A | Air conditioning |
| B | Bottling |
| C | Commercial |
| D | Dewater |
| E | Power |
| F | Fire |
| H | Domestic |
| I | Irrigation |
| R | Recreation |
| J | Industrial (cooling) |
| K | Mining |
| M | Medicinal |
| N | Industrial |
| P | Public supply |
| Q | Aquaculture |
| S | Stock |
| T | Institutional |
| U | Unused |
| Y | Desalination |
| Z | Other (explain in remarks) |
| A | Reported by another government agency |
| D | From driller's log or report |
| G | Private geologist-consultant or university associate |
| L | Depth interpreted from geophysical logs by personnel of source agency |
| M | Memory (owner, operator, driller) |
| O | Reported by the owner of the well |
| R | Reported by person other than the owner, driller, or another government agency |
| S | Measured by personnel of reporting agency |
| Z | Other source (explain in remarks) |
| A | Airline measurement |
| B | Analog or graphic recorder |
| C | Calibrated airline measurement |
| E | Estimated |
| G | Pressure-gage measurement |
| H | Calibrated pressure-gage measurement |
| L | Interpreted from geophysical logs |
| M | Manometer measurement |
| N | Nonrecording gage |
| R | Reported, method not known |
| S | Steel-tape measurement |
| T | Electric-tape measurement |
| V | Calibrated electric-tape measurement |
| Z | Other |
| Blank indicate a static level | |
| D | The site was dry (no water level is recorded) |
| E | The site was flowing recently |
| F | The site was flowing, but the head could not be measured (no water level is recorded) |
| G | A nearby site that taps the same aquifer was flowing |
| H | A nearby site that taps the same aquifer had been flowing recently |
| I | Injector site (recharge water being injected into the aquifer |
| J | Injector site monitor (a nearby site that taps the same aquifer is injecting recharge water) |
| N | The measurements at this site were discontinued |
| O | An obstruction was encountered in the well above the water surface (no water level is recorded) |
| P | The site was being pumped |
| R | The site had been pumped recently |
| S | A nearby site that taps the same aquifer was being pumped |
| T | A nearby site that taps the same aquifer had been pumped recently |
| V | A foreign substance was present on the surface of the water |
| W | The well was destroyed |
| X | The water level was affected by stage in nearby surface-water site |
| Z | Other conditions that would affect the measured water level |
| Y | Yes, file exists. |
| Blank or N | No, file does not exist. |
| SGWFLE(1) | Construction (GW.CONS) date for site. |
| SGWFLE(2) | Miscellaneous (GW.MISC) data for site. |
| SGWFLE(3) | Discharge (GW.DISC) data for site. |
| SGWFLE(4) | Geohydrologic (GW.GEOH) data for site. |
| SGWFLE(5) | Hydraulic (GW.HYDR) data for site. |
| SGWFLE(6) | Water-level (GW.LEV) data for site. |
| SGWFLE(7) | Observation-heading (GW.OBS) data for site. |
| SGWFLE(8) | State water-use (GW.STWU) data for site. |
| SGWFLE(9)-(20) | Unassigned |
| U | Unconfined single aquifer |
| N | Unconfined multiple aquifers |
| C | Confined single aquifer |
| M | Confined multiple aquifer |
| X | Mixed (confined and unconfined multiple aquifers) |
| Y | Yes- Feature is represented |
| N or Blank | No- Feature is not represented |
| STYPE(1) | Stream |
| STYPE(2) | Lake or reservoir |
| STYPE(3) | Estuary |
| STYPE(4) | Unassigned |
| STYPE(5) | Spring |
| STYPE(6) | Ground water other than spring |
| STYPE(7) | Meteorological |
| STYPE(8)-(20) | Unassigned |
| A | Active data-collection site |
| I | Inactive or discontinued data-collection site |
| O | Inventory data site only |
| A | Active data-collection site |
| I | Inactive or discontinued data-collection site |
| O | Inventory data site only |
| SDATA(1) | Stage or water levels--continuous |
| SDATA(2) | Stage or water levels--intermittent |
| SDATA(3) | Water quality--continuous |
| SDATA(4) | Water quality--intermittent |
| SDATA(5) | Precipitation--continuous |
| SDATA(6) | Precipitation--intermittent |
| SDATA(7) | Evaporation--continuous |
| SDATA(8) | Evaporation--intermittent |
| SDATA(9) | Wind velocity |
| SDATA(10) | Tide--continuous |
| SDATA(11) | Tide--intermittent |
| SDATA(12) | Sediment concentration |
| SDATA(13) | Sediment particle size |
| SDATA(14) | Peak flows |
| SDATA(15) | Low flows |
| SDATA(16) | State water use |
| SDATA(17)-(30) | Unassigned |
| SINST(1) | Digital recorder |
| SINST(2) | Graphic recorder |
| SINST(3) | Telemetry--land line |
| SINST(4) | Telemetry--radio |
| SINST(5) | Telemetry--satellite relay |
| SINST(6) | AHDAS |
| SINST(7) | Crest-stage gage |
| SINST(8) | Tide gage |
| SINST(9) | Deflection meter |
| SINST(10) | Bubble gage |
| SINST(11) | Stilling well |
| SINST(12) | CR-type recorder |
| SINST(13) | Weighing rain gage |
| SINST(14) | Tipping-bucket rain gage |
| SINST(15)-(30) | Unassigned |
| 1 | Western Kansas GMD #1 |
| 2 | Equus Beds GMD #2 |
| 3 | Southwest Kansas GMD #3 |
| 4 | Northwest Kansas GMD #4 |
| 5 | Big Bend GMD #5 |
| JM | Jurassic Morrison Formation |
| OU | Ordovician undifferentiated |
| PL | Pennsylvanian Lawrence and Stranger Formations |
| KJ | Lower Cretaceous/Upper Jurassic undifferentiated |
| KD | Cretaceous Dakota, Kiowa Formations, and Cheyenne Sandstone |
| KN | Cretaceous Niobrara Chalk |
| TO | Tertiary Ogallala Formation |
| QU | Quaternary undifferentiated |
| QA | Quaternary alluvium |
| Never or Blank | Never included in the report |
| No | Not included in the report |
| Previously | Has been included in past reports |
| Yes | Is currently used in the report |
| 1 | South, West Kansas |
| 2 | Western, Central Kansas |
| 3 | North, west Kansas |
| 4 | North, Central Kansas |
| 5 | South, Central Kansas |
| 6 | North, East Kansas |
| 7 | East, Central, Kansas |
| 8 | South, East Kansas |
| NGVD29 | National Geodetic Vertical Datum of 1929 |
| NAVD88 | North American Vertical Datum of 1988 |
| D | Differentially corrected Global Positioning System (GPS) |
| G | Global positioning system, uncorrected (Standard Positioning Service (SPS) and Precise Positioning Service (PPS)) |
| L | Long-range navigation system |
| M | Interpolated from map |
| S | Transit, theodolite, or other surveying method |
| U | Unknown |
| NAD27 | North American Datum of 1927 |
| NAD27 (converted from NAD83) | Datum converted from NAD83 to NAD27 |
| A | Measurement was determined to be "anomalous" by KGS statistical and geostatistical analysis |
| B | Only the Year and Month were provided for the measurement date and time- defaults to first day of the month |
| D | The site was dry (no water level recorded) |
| E | The site was flowing recently |
| F | The site was flowing, but the head could not be measured (no water level recorded) |
| G | A nearby site that taps the same aquifer was flowing |
| H | A nearby site that taps the same aquifer had been flowing recently |
| I | Injector site (recharge water being injected into the aquifer) |
| J | Injector site monitor (a nearby site that taps the same aquifer is injecting recharge water) |
| M | The site was plugged |
| N | The measurement was discontinued |
| O | An obstruction was encountered in the well above the water surface (no water level recorded) |
| P | The site was being pumped |
| R | The site had been pumped recently |
| S | A nearby site that taps the same aquifer was being pumped |
| T | A nearby site that taps the same aquifer had been pumped recently |
| V | Foreign substance was present on the surface of the water |
| W | The well was destroyed |
| X | The water level was affected by stage in nearby surface-water site |
| Z | Other conditions that would affect the measured water level (explain in remarks) |
| A | Airline measurement |
| B | Analog or graphic recorder |
| C | Calibrated airline measurement |
| E | Estimated |
| F | Transducer |
| G | Pressure-gage measurement |
| H | Calibrated pressure-gage measurement |
| L | Interpreted from geophysical logs |
| M | Manometer measurement |
| N | Nonrecording gage |
| R | Reported, method not known |
| S | Steel-tape measurement |
| T | Electric-tape measurement |
| V | Calibrated electric-tape measurement |
| Z | Other |
| 0 | Water level accurate to nearest foot |
| 1 | Water level accurate to nearest tenth of a foot |
| 2 | Water level accurate to nearest one-hundredth of a foot |
| No Oil | No oil present on tape |
| Oil Present | Oil found on tape |
| Unknown | Unknown |
| No Weight | No weight was used |
| Weighted | The tape was weighted during the measurement |
| Unknown | Unknown |
| U | Unverified Volunteer Measurement |
| V | Verified or Reviewed Volunteer Measurement |
| B | Brass or bronze |
| C | Concrete |
| G | Galvanized iron |
| I | Wrought iron |
| M | Other metal |
| P | PVC, fiberglass, or other plastic |
| R | Stainless steel |
| S | Steel |
| T | Tile |
| Z | Other (explain in remarks). |
| A | Reported by another government agency |
| D | From driller's log or report |
| G | Private geologist-consultant or university associate |
| L | Depth interpreted from geophysical logs by personnel of source agency |
| M | Memory (owner, operator, driller): less reliable than D -- reported by owner |
| O | Reported by the owner of the well |
| R | Reported by person other than the owner, driller, or another government agency |
| S | Measured by personnel of reporting agency |
| Z | Other source (explain in remarks). |
| A | Air-rotary |
| B | Bored or augered |
| C | Cable-tool |
| D | Dug |
| H | Hydraulic rotary |
| J | Jetted |
| P | Air percussion |
| R | Reverse rotary |
| T | Trenching |
| V | Driven |
| W | Drive and wash |
| Z | Other (explain in remarks). |
| C | Porous concrete |
| F | Gravel pack w/perforations |
| G | Gravel pack w/screen |
| H | Horizontal gallery |
| O | Open end |
| P | Perforated or slotted |
| S | Screen |
| T | Sand point |
| W | Walled |
| X | Open hole |
| Z | Other- explain in remarks. |
| B | Bentonite |
| C | Clay or cuttings |
| G | Cement grout |
| N | None |
| Z | Other- explain in remarks. |
| A | Pumped with air lift |
| B | Bailed |
| C | "Blown" or surged w/compressed air |
| J | Washed or jetted |
| N | None |
| P | Pumped |
| S | Surged with surge block |
| Z | Other- explain in remarks. |
| C | Chemical (acid, and so forth) |
| D | Dry ice |
| E | Explosives |
| F | Deflocculent |
| H | Hydrofracturing |
| M | Mechanical abrasion |
| Z | Other- explain in remarks. |