newlands project irrigated fields mapping: building a feature...

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2014 ESRI Users Conference; July 2014 Designing a Feature Class in the Real World: Newlands Project Irrigated Field Mapping: Jo A. Moore, GISP (Reclamation) & Diane Baley (TCID)


National Agricultural Imaging Program (1m imagery) http://gis.apfo.usda.gov/arcgis/services

http://gis.apfo.usda.gov/arcgis/services

• Reclamation – Geospatial Accuracy – Attribute Accuracy – Currency

• TCID – Geospatial Accuracy – Attribute Accuracy – Currency


• Reclamation – Cadastral & Irrigator Data – Allocation Calculations – Irrigation Water Needs – Regulatory Requirements

• TCID – Cadastral & Irrigator Data – Allocation Calculations – Irrigation Water Needs – Regulatory Requirements

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• The joys of the reluctant user…. – CAD meets all of our needs… – GIS just makes pretty pictures… – The software and training are not

in our budget…


I know nothing about the subject But I’m happy to give my

expert opinion…..

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GIS Field Boundaries (Green) CAD Field Boundaries (Orange)

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• Common Sense • Management of Project Water • State and Federal Laws and Regulations • Operating Constraints

– OCAP – Truckee River Operating Criteria and Procedures, Orr Ditch Decree, Alpine Decree, *TROA – Truckee River Operating Agreement

• End of Season – Water Usage Reporting • Estimating Water Demand for the Upcoming Season. • Estimating Diversions between basins.


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• The great thing about having knowledgeable, strong willed people on a project is that they will beat it up until they find a solution.

• The bad thing about having knowledgeable, strong willed people on a project is that they will beat it up until they find a solution.


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Thing One

Thing Two


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• Identify potentially irrigated areas • Map those areas accurately to reflect water right and

allocation • Create a unique identifier for each field within each

serial number • Identify and classify each field and areas that are not

receiving project water but appear to be irrigated • Attribute each field polygon with its correct delivery

lateral, takeout structure, and duty.

Water Righted This place has a legal right to surface irrigation water either by permanent water right or by temporary transfer of surface water rights

Allocation The total amount of irrigation water in acre feet allotted to a serial number for the current season. Equals the area in acres times the duty

Duty Acre feet per acre entitlement as determined by bench or bottom land qualification

Field A potentially irrigated place on the ground Attribute A column in the tabular record Bench/Bottom A classification by soil type and permeability that

determines the acre feet per acre of land irrigation water entitlement.

Serial Number The identification number assigned by the irrigation district

Takeout A gate in an irrigation ditch that delivers water to a specific place

Lateral Secondary delivery channel Canal Primary delivery channels


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Delivery and Drainage Structures • Canals, Service Laterals and Takeouts, Determines which takeout gate is opened to irrigate a specific field

Newlands Fields Any land within the irrigation district that is, or could potentially be cultivated and irrigated • Irrigated Acres. Allocated Water

Water Rights Mapping • No known geospatial layer • Primarily paper maps and tabular data

Bench Bottom Mapping • No known geospatial layer • Primarily paper maps and tabular data

Mapping the Newlands Irrigation Project

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Cultivated Fields

Corrals Slough

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• Polygons: + 2-feet Precision and Accuracy – and + 0.01 acres in area

• Attributes: 100%


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The red lines are the original digitized field boundaries

Green polygons are the most recent revised field boundaries

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Car Parts Collection; Not Currently Irrigated.

Is this ditch being grazed? Where is the berm?

Field edge is hidden under the trees and a stock yard has been enlarged.


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• Normalized Difference Vegetation Index

• Measuring “Greenness”


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• AG - agricultural ground

• DOM - domestic watersource

• DRAINAGE - known drainage

• MARGINAL - known poor soil

• MUNI - uses municipal water POND - pond of any type

• PUMP - irrigated by pump REC - Recreation area

• SLOUGH - known slough

• STOCK - animal enclosure

• WELL - underground source

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Irrigated and cropped all together One Field Irrigated and cropped separately Split Field Physical barrier, i.e. road, laterals, etc. Split Field Multiple duties Split Field Irrigated in excess of water right Split Field Section commonly not irrigated Split Field

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• It started as a Reclamation & TCID collaborative project….. – Training, Planning, Implementation,

and Well Defined Goals made it work. • We defined a Maintenance Plan and Schedule • Reclamation provides technical

assistance and support as needed, but….

• MILESTONE: TCID accepted responsibility as the ADS in the 2013 Irrigation Season!!

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• Calculate the total irrigated acres • Calculate water allocation to irrigators • Estimate irrigation water demand • Estimate Lahontan Reservoir storage requirement • Regulatory compliance • Help water users manage their water • Data to assist in estimating seed and re-leveling costs • Data to assist in establishing conservation easements. • Etc……..


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• Bureau of Reclamation • Truckee-Carson Irrigation District • Water Users / Irrigators • US Fish and Wildlife Service • Nevada Department of Water Resources • Federal Water Master • Local Government • USDA NRCS (Natural Resources Conservation Service)


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newlands project irrigated fields mapping: building a feature...

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