- Resource System
- Watershed and associated topography
- Resource Units
- Freshwater
The Nayband Irrigation system is located in The province of Khorasan in north eastern Iran. The original case was reported in 1971 and 1972, and catalogues an action situation involving approximately 80 agricultural related families. The resource appropriated related to the social dilemma is water for irrigation, which is delivered by canals.
This case study is part of the original Common-Pool Resource (CPR) database. A summary of the original CPR coding conducted in the 1980s by Edella Schlager and Shui Yan Tang at Indiana University may be found under the CPR tab in the Institutional Analysis section below.
The resource appropriated from Nayband Irrigation is water for irrigation. The irrigation system described here includes channels that deliver water from nearby springs to the farmland in the Nayband village.
SCREENER:
Case: Nayband Irrigation, Iran
The information regarding the following common-pool resource system was taken from empirical evidence from a field setting. Data on the system was extracted from a chapter in a book. Currently, there are no additional documents to cite which may provide further information about this common-pool resource.
These documents describe two resources in detail. The primary resource is the Nayband Irrigation, situated in Nayband of Iran. More generally, it is located in Middle East & South Asia. The system's sector is that of water. Relatively good information has been collected about the stakes of participants who appropriate from Nayband Irrigation. The condition of this resource is well understood. Complete information is not available regarding the strategies used by key groups interacting with the system. There is thorough documentation of the operational rules for this resource. This is the result of a high level of confidence that the authors who recorded the features of Nayband Irrigation have a complete knowledge of its particulars. Furthermore, the authors have provided sufficient data to formulate a structured coding process.
The Nayband Irrigation covers an unknown area. There are 101-200 total appropriator teams appropriating from the resource . Appropriator teams for the resource are always formally organized.
Spooner compares the Nayband irrigation system with one in Deh Salm in the same region. The Nayband system derives water from nearby springs. It does not require much investment to maintain the channels which carry water from the springs to the fields. Unlike Deh Salm, people here do not have to rely on external capital investment to maintain their irrigation system. Thus, they are less susceptible to external influence than people in Deh Salm. Although every member of the community owns water, the nature of the resources are such that few, if any, own enough to subsist from agriculture alone. Many adult men have to tend flocks or work in mines away from home.
CITATION(S):
Spooner, Brian (1974) "Irrigation and Society: The Iranian Plateau." In IRRIGATION'S IMPACT ON SOCIETY, edited by Theodore Downing and McGuire Gibson, 43-57. Tucson: University of Arizona Press.* [GN 443 .I718]
Spooner, Brian (1971) "Continuity and Change in Rural Iran: The Eastern Deserts." In IRAN: CONTINUITY AND VARIETY, edited by Peter J. Chelkowski, 1-19. New York: The Center for Near Eastern Studies and the Center for International Studies, New York University.*
Spooner, Brian (1972) "The Iranian Deserts." In POPULATION GROWTH: ANTHROPOLOGICAL IMPLICATIONS, edited by Brian Spooner, 245-268. Cambridge, MA: MIT Press.*
The resource appropriated from Nayband Irrigation is water for irrigation. It is produced physically and is a renewable moving (fugitive) unit. The irrigation system described here includes channels that deliver water from nearby springs to the farmland in the Nayband village.
The boundary of this resource has natural/constructed attributes which do not limit entry. The boundaries of this resource are smaller than the location, and exist in one country, and are not divided among multiple general purpose local jurisdictions at a single level. The boundaries of this resource are independent of a development project designed by non-residents.
There are not distinct and stable micro-environmental or ecological zones within this resource (educated guess).
There are strategic points within the resource where the main flow of the water for irrigation can be controlled (inferred). The case study did not include information regarding whether or not there is considerable variation over space in the availability of water for irrigation within the resource. The case study did not include information regarding whether or not there is considerable variation in the flow of water for irrigation within a single year. The case study did not include information regarding whether or not there is considerable variation in the flow of water for irrigation from year to year.
The topography of the resource or the land immediately around the resource is steeply sloping (educated guess).
The boundaries of the production resource are totally seperated from the boundaries of the appropriation resource (confident). The boundaries of the production resource have a relationship to the boundaries of the location that was not indicated in this case study. The boundaries of the distribution resource are not identical to the boundaries of the appropriation resource. The distribution resource is a facility connected to the appropriation resource (confident). The boundaries of the production resource are not equivalent to the boundaries of the distribution resource. The production resource is a facility connected to the distribution resource (confident).
The headworks (production resource) are operated by the same agency(s) (or the same group(s) of people) as the appropriation resource, but the agency(s) or the group(s) of people are not the sole operator(s) of the headworks (inferred). The distribution system is operated by the same agency(s) or the groups(s) of people as the appropriation system, but the distribution system is not solely operated by the same agency(s) (or the same group(s) of people) as the appropriation resource (inferred). The distribution system is solely operated by the same agency(s) (or the same group(s) of people) as the headworks of the system (inferred).
LOCATION:
The appropriation resources are situated in the Nayband village. The boundaries of the location are boundaries of a village. The appropriation resource present in this location consists of channels that deliver water from nearby springs to the farmland in the Nayband village.
The system is located within one country. Within this country, the system's location is not divided among several general purpose local jurisdictions at the same level. A permanent population lives year round in this location (highly confident). There is not frequent contact and communication between people in this location and officials in a nearby administrative center (inferred). This location is also characterized by an economy that is stable and relatively autonomous with respect to other economic networks during the entire time period (inferred).
The latitude of this location is not specified, and its longitude is not specified. The elevation of this location is 0 meters. The highest elevation is 0. The lowest elevation of this location is 0. The region's average annual rainfall is . The region's average annual evapotranspiration is . The distribution of rainfall and evapotranspiration per month is as follows:
January precipitation: 0, evapotraspiration: 0
February precipitation: 0, evapotraspiration: 0
March precipitation: 0, evapotraspiration: 0
April precipitation: 0, evapotraspiration: 0
May precipitation: 0, evapotraspiration: 0
June precipitation: 0, evapotraspiration: 0
July precipitation: 0, evapotraspiration: 0
August precipitation: 0, evapotraspiration: 0
September precipitation: 0, evapotraspiration: 0
October precipitation: 0, evapotraspiration: 0
November precipitation: 0, evapotraspiration: 0
December precipitation: 0, evapotraspiration: 0
COUNTRY, REGION, TIME:
This study examines a common-pool resource institution in Iran, starting in 0, ending in 0.
During the period of time that this region was studied, the citizens of Iran were not able to follow formal procedures to create their own local general purpose governments (educated guess). This study did not indicate whether or not the citizens living in Iran were able to follow formal procedures to create their own local special purpose enterprises with some public powers. Regarding the charter of a local special purpose enterprise, the level of choice given to the citizens was not included in the case information.
It was not included in the case whether or not citizens in this or similar regions had created or evolved public enterprises with public treasuries and collective decisions outside the formal governmental structure. The stance of the national government was not included in the case information toward efforts of the citizens to organize locally and create general or special enterprises to cope with local problems.
The individuals that made collective choice decisions in Iran were locally elected officials who could act on their own without prior review (inferred). The source of funds used by general purpose local governments was not included in the case study. The judiciary system in this region during the time of the study was primarily a non-traditional system (educated guess). The judges gained their positions through ways that were not included in the case information. The tenure of the judges was not included in the case information. In general, the judges in Iran has a reputation that was not included in the case information. The single dominant legal tradition in use in this region was Islamic Law (confident).
The resource appropriated from Nayband Irrigation is water for irrigation. The irrigation system described here includes channels that deliver water from nearby springs to the farmland in the Nayband village.
OPERATIONAL LEVEL:
TYPE OF SITUATION
The processes described in the related documents are primarily related to appropriation, distribution, and production. The formal owner(s) of the resource discussed in this study are local appropriators. The set of individuals who have rights to withdraw from this resource is well-defined. As of the beginning of this period, the owners are exercising (or attempting to exercise de jure) and effective in gaining closed access to this resource. Since the beginning of this period, the appropriators are exercising (or attempting to exercise de jure) effective closed access to this resource.
EVENTS MARKING THE BEGINNING ACTION SITUATION
It is estimated that the operational level coded on this form ended in 1970. The estimated duration of the patterns that are described in this form is 501 to 1000 years. Throughout the duration there were no changes made in operational, collective, or consititutional rules. There was no change in resource size or structure. There was no new technology introduced to the system over the duration of the patterns coded on this form. There was no substantial external change in the value of the units appropriated. The quantity of units available did not change due to a change in appropriation patterns of other appropriators' withdrawals from the same production or distribution resource. There were no new groups starting to withdraw units from the appropriation resource. There was no recorded change to one or more variables internal to the operational level. The variables that changed were -2. The author begins the description of this case at this point in history. The author begins at this point in history because when the resource was created.
CONDITIONS AT THE BEGINNING AND END OF PERIOD COVERED BY THIS FORM*
For biological resources at the beginning of this period, the balance between the quantity of units withdrawn and the number of units available was not included in the case information. For biological resources at the end of this period, the balance between the quantity of units withdrawn and the number of units available was a moderate shortage. For physical resources at the beginning of this period, the balance between the quantity of units withdrawn and the quantity of units needed, given the usual patterns of use for these units was not included in the case information. For physical resources at the end of the period the balance between the quantity of units withdrawn and the quantity of units needed, given the usual patterns of use for these units, was a moderate shortage.
The following includes the available statistics on the use of this resource at the beginning of the time period, followed by the end of the time period:
*In fisheries and other biological systems, this is the maximum sustainable number of units. In irrigation, this refers to the optimal water requirements of the crops in the established fields served by this system.
At the beginning of the period, the units were predominantly used to produce other units, and also consumed by appropriators and families.
At the end of the period, the units were predominantly used to produce other units, and also consumed by appropriators and families.
As of the beginning of the period, the quality of the units being withdrawn from the resource was not included in the study. As of the end of the period, the quality of the units being withdrawn from the resource was passable (inferred). At the beginning of the period of the study, there was no information provided regarding whether or not there are problems of pollution in this or other resources, due to the way units are being appropriated. At the end of the period of the study, there were no problems of pollution in this or other resources due to the way units are being appropriated (inferred). As of the beginning of the period, the extent of technical externalities resulting from the appropriation activities of participants from this resource was not indicated. As of the end of the period, the extent of technical externalities resulting from the appropriation activities of participants from this resource was relatively low (educated guess). At the beginning of this study the appropriation resource was being maintained at a level that was not recorded in the case information. At the end of this study the appropriation resource was moderately well maintained, and in good working order (educated guess). At the beginning of this period the appropriators shared levels of trust that are not indicated in the case study. At the end of the period the appropriators shared moderate to high levels of mutual trust (e.g. oral promises given high credence) (inferred). ## Unknown markup: Start ##By the end of this period no change had occurred in the property rights regime related to the appropriation resource (inferred).
INFORMATION LEVELS
There are no maps or charts of the appropriation resource for use by the appropriators (educated guess). Maps and/or charts of the production and distribution resources are not available to the appropriators (educated guess). The appropriators of this resource can be seen by each other while withdrawing units from the resource (educated guess). No appropriators are in radio communication with each other while appropriating from the resource (educated guess). There was no information provided to indicate whether or not there are actions being taken, by appropriators or officials, to generate information about the condition of the resource. There are not records of the withdrawals from this resource kept in a systematic way (inferred). There are not records of the physical factors which directly affected the resource kept in a systematic way (inferred). There are not records of the appropriators' contributions to monitoring of the resource kept in a systematic way (inferred). There are not records of the appropriators' contribution to the maintenance of the resource kept in a systematic way (inferred). The study did not indicate whether or not there are arenas being used for the exchange of information about conditions of the resource. Appropriators get together to discuss mutual problems of the resource at a frequency which was not included in the case study. The appropriators have a considerable familiarity with the characteristics of this resource (educated guess).
POTENTIAL ACTIONS AND LEVELS OF CONTROL
There are no specialized staff or workers to undertake maintenance (inferred). The quality or quantity of the units available to the appropriators are not adversely affected by the strategies of prior appropriators (educated guess). There are not problems of pollution resulting from activities of others who are not appropriators of this resource or inhabitants of this location (e.g. acid rain, sewage disposal) (educated guess). There does not appear to be an insurance mechanism available to the appropriators related to variability of income from the resource (educated guess).
PATTERNS OF INTERACTION
Differences between subgroups relating to gender identification does not affect communication (educated guess). Differences between subgroups relating to ethnic identification does not exist (inferred). Differences between subgroups relating to clan identification does not affect communication (educated guess). Differences between subgroups relating to racial identification does not exist (inferred). Differences between subgroups relating to caste identification does not exist (inferred). Differences between subgroups relating to religious identification does not affect communication (educated guess). Differences between subgroups relating to languages spoken does not exist (inferred). Differences between subgroups relating to general cultural views of the resource system and its use does not exist (inferred). Differences between subgroups relating to any problems that affect communication does not exist (inferred).
The general manner in which appropriators related to one another during this study is a relatively positive, reciprocal manner -- the presumption was made that long-term relationships are involved and positive actions are undertaken without a specific expectation of return (educated guess). If someone violated the rules-in-use related to the appropriation process from this resource, it is likely that he/she would encounter social sanctions imposed by other appropriators (who are not filling posititions as official monitors) (educated guess). If someone violates the rules-in-use related to the appropriation process from this resource, it is likely that he/she would encounter physical sanctions by other appropriators (who are not filling posititions as official monitors) (educated guess).
POSITIONS AND PARTICIPANTS
At the end of the period studied the position of non-appropriator (individuals prevented from using the resource) did exist (educated guess). At the beginning of the period there was a general estimate of some undocumented number appropriators. There was a general estimate of 25-50 appropriators at the end of the period (educated guess). The "official" position of monitor (apart from the willingness of all appropriators to monitor) does not exist (inferred).
NUMBER AND RELATIONSHIPS AMONG SUBGROUPS
There will be 1 subgroup form(s) completed in relation to this operational level form. The ID number(s) of the subgroup(s) coded are as follows: 66.1 - 0 - 0 - 0
EVALUATION OF RESULTS
There are no appropriators who were consistently disadvantaged in this period (educated guess). The relatively worst off appropriators have not been cut out of their benefits from this resource or substantially harmed (educated guess). By the end of the period studied the distance between those who were the least advantaged and those who were the most advantaged could be characterized as remaining relatively constant over time (educated guess).
AUTHOR'S EVALUATION AND CAUSAL ASSUMPTIONS
In this coding form the author does not focus on the readers' concept of results and the evaluation of results (educated guess).
The author is interested in how the physical and technological features of the resource affect social and economic organization.
SUBGROUP:
Participants:
The criteria for who is a member is well defined (inferred). . This group ended with a membership of 40 (educated guess). Less than 10% of this group is literate in a language that records or publications about this resource and/or location (or other similar resources) is kept (highly confident).
The following statements characterize the composition of this subgroup's population with respect to variables that may affect the capacity to communicate effectively:
The difference in composition with regard to gender identification does not affect communication (educated guess). Ethnic or cultural identification causes no difference in composition (inferred). The difference in composition with regard to clan identification does not affect communication (educated guess). Racial identification causes no difference in composition (inferred). Caste identification causes no difference in composition (inferred). The difference in composition with regard to religious identification does not affect communication (educated guess). There is no difference in composition with regard to languages spoken (inferred).
.
Legal Rights:
Members of this subgroup have de jure rights of access (inferred). The right to withdraw is held by this subgroup de jure (inferred). Rights to participate in management of this resource is held de jure (inferred). Exclusion from use of the entire resource is exercised de jure (inferred). Members of this subgroup cannot exercise the right to decide who can be excluded from particular zones within the resource either de facto nor de jure. (educated guess). The separable right of transfer to the flow of units from this resource is held de jure by this subgroup (inferred). The separable rights to exercise transfer to shares of this appropriation resource, or closely related production and/or distribution resources are neither held de jure nor de facto (educated guess). Transferring shares of major appropriation equipment which are necessary to engage in appropriation is not exercised either je jure nor de facto## Unknown column: EQUIPSHAR ##.
Stakes and Resources:
The length of time this subgroup has regularly appropriated from this resource is 501 through 1000 years (confident). Around 91%-100% of members reside in or adjacent to this resource (confident). Most people in this subgroup are moderately dependent (i.e. about half of the family income) on this resource (educated guess). Around 51%-75% of this subgroup work a substantial amount of time in activities not associated with appropriation from this resource (educated guess). The proportion of this subgroup that currently appropriates similar units from other resources is less than 10% (inferred). Given the economy of the location, the average annual family income (including all non-monetary forms of income) is considered average (educated guess). The variance of the average annual family income across families is low (inferred). Over time the variance in average annual family income is low (inferred). Capital is owned by 91%-100% of this subgroup (educated guess). No real alternatives for the supply unit are available (confident).
Potential Actions and Levels of Control:
Keeping in mind the physically available levels of withdrawal that are possible from this resource, the following shows the extent to which rules concerning different aspects of withdrawal constrain appropriation: technological rules cause unknown contraints, time limits which limit the range of choice moderately constrain (educated guess), quantity limits which limit the range of choice moderately constrain (educated guess), and marginal units or units obtained by increasing levels of appropriation have a moderate value immediate return (educated guess).
Technology:
The appropriative power of the technology used threatens the balance between units withdrawn and units available even if no new users are added (inferred).
Strategies Adopted:
At the end of the period the rate of unit withdrawals was constant (educated guess). In irrigation, the appropriation resources (at the end of the period) produce mainly grains other than paddy rice, and also fodder. Resources have been expended (including time) to avoid actions that would harm the structure of the appropriation resource (inferred). Members do not have access to an alternative source of supply (educated guess). At least one member has assumed entrepreneurial activity in trying to achieve coordinated strategies in relationship to withdrawal of appropriation units (educated guess). In characterizing the usual behavior of the members of this subgroup with respect to local operation level rules-in-use (other than in extreme shortage), it can be said that almost all of the members follow the rules set in place (inferred). The level of infraction of members who are not rule followers is generally small (inferred).
Subgroup Results:
This subgroup appropriates 91%-100% of its total appropriated units at the end of this period (highly confident). By the end of this time period the appropriates from this resource have remained approximately constant (highly confident). The absolute quantity of appropriation units obtained by this group has remained constant (educated guess).
The resource appropriated from Nayband Irrigation is water for irrigation. The irrigation system described here includes channels that deliver water from nearby springs to the farmland in the Nayband village.
OPERATIONAL RULES:
Concerning national collective choice relating to the resource, there is a national level of government, but it does not exercise jurisdiction in relation to the type of resource appropriated by this subgroup. Concerning regional collective choice, there is a regional level of government, but it does not exercise jurisdiction in relation to the type of resource appropriated by this subgroup.
With regard to local collective choice, there is no level of government or organization of appropriators at the location with operational level rules as devised by collective choice mechanisms.
Boundary Rules
The following rules define the requirements that must be met before individuals are eligible to harvest or withdraw units from the appropriation resource.
The national and regional level(s) of government or organization had no jurisdiction over the resource.
The local level(s) of government or organization does not exist.
A rule exists requiring ownership or leasing of rights to a certain proportion of the flow. This rule is enforced at the rules-in-use level(s).
Entry rights may be transmitted to anyone designated by the original owner.
Within one generation of potential resource appropriators, entry rights can be given, leased, rented, sold or transferred to others.
When transfer on a temporary or permanent basis is allowed, the person who makes the transfer determines to whom such rights can be transferred.
Authority and Scope Rules
The default conditions for both authority and scope rules do not apply.
The following paragraphs include information on rules of 1 cycle(s).
Authority Rules:
The national and regional level(s) of government or organization had no jurisdiction over the resource.
The local level(s) of government or organization does not exist.
There is a rule requiring withdrawal up to a fixed percentage of the total units available during a period, based on the ownership or leasing rights to a certain proportion of the flow. This rule is enforced at the rules-in-use level(s), and is part of the most restrictive, regularly adopted/used set of rules.
There is a rule requiring withdrawal at a fixed time slot, based on the ownership or leasing rights to a certain proportion of the flow. This rule is enforced at the rules-in-use level(s), and is part of the most restrictive, regularly adopted/used set of rules.
There is a rule forbidding withdrawal whenever and wherever desired, based on unspecific criteria. This rule is enforced at the rules-in-use level(s), and is part of the most restrictive, regularly adopted/used set of rules.
The authority and scope rules do not apply to whether or not certain subgroups received substantially unequal privileges, because there is only one subgroup.
Scope Rules:
The national and regional level(s) of government or organization had no jurisdiction over the resource.
The local level(s) of government or organization does not exist.
Information Rules
Payoff Rules
The default condition, that all appropriators can retain whatever they can physically keep hold of and no external rewards, taxes, or sanctions are imposed is not imposed in this case. The authors have the following confidence level for the results of this section: inferred. Incarceration is not imposed as penalty on appropriators for breaking rules related to the appropriation of this resource. Appropriators may not lose their entry or appropriation rights for breaking rules related to the appropriation of the resource. Appropriators cannot obtain external aid to develop their appropriation technologies. Appropriators cannot obtain external aid to develop or repair their production, distribution, or appropriation resources. Appropriators cannot obtain external aid to develop technologies for using the resource units. Appropriators are not party to price support contracts or guaranteed purchase agreements for the selling of resource units or commodities produced by resource units.
The following percentages indicate the percentages assigned to individual positions. If more than one percentage is listed per position, the individual percentages refer to the different arrangements existing within the operational rules.
Aggregation Rules
Overall Questions About Rules Configuration
The general framework of the rules-in-use has governed the activities of this subgroup for 501 to 1000 years.
Nayband Irrigation System
Resource System
The resource appropriated from Nayband Irrigation is water for irrigation.
Resource Systems
Watershed and associated topography
Groundwater aquifers and associated watershed
Arable land near qanat
Groundwater from the qanat
Pasture when rain is sufficient
Resource units: Water for irrigation
Resource Users
Nayband community (humans, goats)
133 households
farmers and supplementary herding
smallholders and tenants
Absentee landlords (humans, goats, camels)
Live far away, not community members
small cohort (~5)
farming and herding assets
Public Infrastructure Providers
Nayband community members
Province governor
Public Infrastructure
Hard Infrastructure
Irrigation network of channels (Public)
Springs (Public)
Individual basin plots; lowered, with bands (Private)
Soft Infrastructure
Water scope rules: temporal water unit standardization (10 days cycle); There are 85 shares in one day’s flow, making 850 altogether in a ten-day cycle
Private property (water, land, contract)
Agrarian community socio-cultural institutions ("peasant"; quasi-egalitarian; only among community members = permanent residents)
Communitarian labor reciprocity (only among community members)
Relationship 1
Hot springs and channels provide water to land R=>RU
Water transforms in-arable land into arable soil R=>RU
Arable land provides basis for subsistence R=>RU
Farmers modify land into irrigable basin plots RU=> R
Farmers extract crop yields from soil via cultivation RU=> R
Rain transforms barren land into scrub-pasture R=>RU
Livestock feed on pasture and cultivated fodder, and drink water RU=> R
Relationship 2
Tenants cultivate plots of absentee landlords and pay rent to them RU=> PIP
Farmers pay taxes to the central govt. RU=> PIP
Neighbors and community members participate in community social institutions RU=> PIP
Sub regional governor provide economic patronage to local clients PIP => RU
Relationship 3
Public Infrastructure Providers -- Hard Infrastructure
Neighbors and community members maintain public irrigation channels and private basin plots PIP => PI
Debris from land use gradually obstructs irrigation channels PI=> PIP
Public Infrastructure Providers -- Soft Infrastructure
Neighbors and community members provide labor reciprocity PIP => PI
Neighbors and community members monitor each other to maintain community institutions PIP => PI
Relationship 4
Resource -- Hard Infrastructure
Channels transport water to land PI=> RU
Irrigation plots hold water to enhance soil moisture PI=> RU
Flow of water gradually erodes and degrades irrigation channels RU=> PI
Resource -- Soft Infrastructure
Community labor reciprocity enhances efficient maintenance of channels and basins, which enhance efficiency of water dissemination on arable land PI=> RU
Relationship 5
Resource Use Dynamics -- Hard Infrastructure
Channels enable transport of water to basin plots
Basin plots further away from water source get less water per temporal water unit because of greater exposure to infiltration and evaporation.
Basin plots closer to water source get more water per temporal unit because of less exposure to infiltration and evaporation
Resource Use Dynamics -- Soft Infrastructure
Neighbors and community members monitor others' water usage from the hot springs
Relationship 6
Resource Users -- Hard Infrastructure
Neighbors and community members maintain public irrigation channels and private basin plots RU=> PI
Debris from land use gradually obstructs irrigation channels PI=> RU
Resource Users -- Soft Infrastructure
Neighbors and community members provide economic reciprocity RU=> PI
Neighbors and community members monitor others' water usage RU=> PI
Landed elites, neighbors and community members regulate private property rights/relations (water, land, contract) RU=> PI
Exogenous Drivers 7 (Resource System)
Drought
Impacts groundwater level
Impacts pasture abundance
Violent rain-storms
Can cause obstruction and/or collapse of irrigation channel
Exogenous Drivers 7 (Public Infrastructure)
(none specified)Exogenous Drivers 8 (Resource Users)
(none specified)Exogenous Drivers 8 (Public Infrastructure Providers)
(none specified)Human Infrastructure, Private and Human-Made (Resource Users)
Plots of irrigable land
Human Infrastructure, Private and Human-Made (Public Infrastructure Providers)
None
Irrigation and Society: The Iranian Plateau. Irrigation's Impact on Society. :43-57.
. 1974.Continuity and Change in Rural Iran: The Eastern Deserts. Iran: Continuity and Change. :1-19.
. 1971.The Iranian Deserts. Population Growth: Anthropological Implications. :245-268.
. 1972.